SVN Alba r4654 - in prosistem/alba/trunk/alba: apps/principal/lib apps/principal/lib/iCalcreator apps/principal/modules/evento/templates apps/principal/modules/relDivisionActividadDocente/actions apps/principal/modules/relDivisionActividadDocente/templates lib/model - Alba-desarrollo

30 May 2007

Author: josx
Date: 2007-05-30 15:53:43 -0300 (Wed, 30 May 2007)
New Revision: 4654

Added:
   prosistem/alba/trunk/alba/apps/principal/lib/iCalcreator/
   prosistem/alba/trunk/alba/apps/principal/lib/iCalcreator/iCalcreator.class.php
   prosistem/alba/trunk/alba/apps/principal/lib/miExportadorIcal.class.php
Modified:
   prosistem/alba/trunk/alba/apps/principal/lib/miEvento.class.php
   prosistem/alba/trunk/alba/apps/principal/modules/evento/templates/_carga_evento.php
   prosistem/alba/trunk/alba/apps/principal/modules/relDivisionActividadDocente/actions/actions.class.php
   prosistem/alba/trunk/alba/apps/principal/modules/relDivisionActividadDocente/templates/_list_actions.php
   prosistem/alba/trunk/alba/lib/model/Evento.php
Log:
Se agregan nueva forma de agregar a cualquier modulo un evento y exportarlo a ical. Ahora se agrego a relDivisionActividadDocente (carga manual de horarios de docentes para la actividad y division)

Added: prosistem/alba/trunk/alba/apps/principal/lib/iCalcreator/iCalcreator.class.php
===================================================================

--- prosistem/alba/trunk/alba/apps/principal/lib/iCalcreator/iCalcreator.class.php	2007-05-30 18:11:50 UTC (rev 4653)
+++ prosistem/alba/trunk/alba/apps/principal/lib/iCalcreator/iCalcreator.class.php	2007-05-30 18:53:43 UTC (rev 4654)
@@ -0,0 +1,6078 @@
+<?php
+/*********************************************************************************/
+/**
+ * iCalcreator class v2.0
+ * copyright (c) 2007 Kjell-Inge Gustafsson
+ * www.kigkonsult.se/iCalcreator/index.php
+ * [email protected]
+ *
+ * Description:
+ * This file is a PHP implementation of RFC 2445.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+/*********************************************************************************/
+/*********************************************************************************/
+/*         A little setup                                                        */
+/*********************************************************************************/
+            /* your local language code */
+// define( 'ICAL_LANG', 'sv' );
+            // alt. autosetting
+/*
+$langstr     = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
+$pos         = strpos( $langstr, ';' );
+if ($pos   !== false) {
+  $langstr   = substr( $langstr, 0, $pos );
+  $pos       = strpos( $langstr, ',' );
+  if ($pos !== false) {
+    $pos     = strpos( $langstr, ',' );
+    $langstr = substr( $langstr, 0, $pos );
+  }
+  define( 'ICAL_LANG', $langstr );
+}
+*/
+            /* only for phpversion 5.x, date management, default timezone setting */
+if( substr( phpversion(), 0, 1) >= '5' ) {
+  date_default_timezone_set( 'Europe/Stockholm' );
+}
+            /* version string, do NOT remove!! */
+define( 'ICALCREATOR_VERSION', 'iCalcreator 2.0' );
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * vcalendar class
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.8 - 2006-11-27
+ */
+class vcalendar {
+            //  calendar property variables
+  var $calscale;
+  var $method;
+  var $prodid;
+  var $version;
+  var $xprop;
+            //  container for calendar components
+  var $components;
+            //  component config variables
+  var $unique_id;
+  var $language;
+  var $directory;
+  var $filename;
+  var $delimiter;
+  var $nl;
+  var $format;
+            //  component internal variables
+  var $attributeDelimiter;
+  var $valueInit;
+            //  component xCal declaration container
+  var $xcaldecl;
+/*
+ * constructor for calendar object
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.22 - 2007-04-08
+ * @return void
+ */
+  function vcalendar () {
+    $this->_makeVersion();
+    $this->calscale   = null;
+    $this->method     = null;
+    $this->_makeUnique_id();
+    $this->prodid     = null;
+    $this->xprop      = array();
+/**
+ *   language = <Text identifying a language, as defined in [RFC 1766]>
+ */
+    if( defined( 'ICAL_LANG' ))
+      $this->setConfig( 'language', ICAL_LANG );
+    $this->setConfig( 'nl',         "\n" );
+    $this->setConfig( 'format',     'iCal');
+    $this->directory  = null;
+    $this->filename   = null;
+    $this->setConfig( 'delimiter',  DIRECTORY_SEPARATOR );
+    $this->xcaldecl   = array();
+    $this->components = array();
+  }
+/*********************************************************************************/
+/**
+ * Property Name: CALSCALE
+ */
+/**
+ * creates formatted output for calendar property calscale
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createCalscale() {
+    if( !isset( $this->calscale ))
+      return;
+    switch( $this->format ) {
+      case 'xcal':
+        return ' calscale="'.$this->calscale.'"'.$this->nl;
+        break;
+      default:
+        return 'CALSCALE:'.$this->calscale.$this->nl;
+        break;
+    }
+  }
+/**
+ * set calendar property calscale
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-13
+ * @param string $value
+ * @return void
+ */
+  function setCalscale( $value ) {
+    $this->calscale = $value;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: METHOD
+ */
+/**
+ * creates formatted output for calendar property method
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createMethod() {
+    if( !isset( $this->method ))
+      return;
+    switch( $this->format ) {
+      case 'xcal':
+        return ' method="'.$this->method.'"'.$this->nl;
+        break;
+      default:
+        return 'METHOD:'.$this->method.$this->nl;
+        break;
+    }
+  }
+/**
+ * set calendar property method
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-13
+ * @param string $method
+ * @return void
+ */
+  function setMethod( $method ) {
+    $this->method = $method;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: PRODID
+ *
+ *  The identifier is RECOMMENDED to be the identical syntax to the
+ * [RFC 822] addr-spec. A good method to assure uniqueness is to put the
+ * domain name or a domain literal IP address of the host on which.. .
+ */
+/**
+ * creates formatted output for calendar property prodid
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createProdid() {
+    if( !isset( $this->prodid ))
+      $this->_makeProdid();
+    switch( $this->format ) {
+      case 'xcal':
+        return ' prodid="'.$this->prodid.'"'.$this->nl;
+        break;
+      default:
+        return 'PRODID:'.$this->prodid.$this->nl;
+        break;
+    }
+  }
+/**
+ * make default value for calendar prodid
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-10
+ * @return void
+ */
+  function _makeProdid() {
+    $this->prodid  = '-//'.$this->unique_id.'//NONSGML '.ICALCREATOR_VERSION.'//'.strtoupper( $this->language );
+  }
+/**
+ * Conformance: The property MUST be specified once in an iCalendar object.
+ * Description: The vendor of the implementation SHOULD assure that this
+ * is a globally unique identifier; using some technique such as an FPI
+ * value, as defined in [ISO 9070].
+ */
+/**
+ * make default unique_id for calendar prodid
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-10
+ * @return void
+
+ */
+  function _makeUnique_id() {
+    $this->unique_id  = gethostbyname( $_SERVER['SERVER_NAME'] );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: VERSION
+ *
+ * Description: A value of "2.0" corresponds to this memo.
+ */
+/**
+ * creates formatted output for calendar property version
+
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createVersion() {
+    if( !isset( $this->version ))
+      $this->_makeVersion();
+    switch( $this->format ) {
+      case 'xcal':
+        return ' version="'.$this->version.'"'.$this->nl;
+        break;
+      default:
+        return 'VERSION:'.$this->version.$this->nl;
+        break;
+    }
+  }
+/**
+ * set default calendar version
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-10
+ * @return void
+ */
+  function _makeVersion() {
+    $this->version = '2.0';
+  }
+/**
+ * set calendar version
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-10
+ * @param string version
+ * @return void
+ */
+  function setVersion( $version ) {
+    $this->version = $version;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: x-prop
+ */
+/**
+ * creates formatted output for calendar property x-prop, iCal format only
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.22 - 2007-04-07
+ * @return string
+ */
+  function createXprop() {
+    if( 'xcal' == $this->format )
+      return false;
+    if( 0 >= count( $this->xprop ))
+      return;
+    $xprop = null;
+    $toolbox = new calendarComponent();
+    $toolbox->setConfig( 'language', $this->getConfig( 'language' ));
+    $toolbox->setConfig( 'nl',       $this->getConfig( 'nl' ));
+    $toolbox->_createFormat(         $this->getConfig( 'format' ));
+    foreach( $this->xprop as $xpropPart ) {
+      $attributes = $toolbox->_createParams( $xpropPart['params'], array( 'LANGUAGE' ));
+      foreach( $xpropPart['value'] as $label => $value ) {
+        if( is_array( $value ))
+          $value  = implode( ',', $value );
+        $xprop   .= $toolbox->_createElement( strtoupper( $label ), $attributes, $value );
+      }
+    }
+    return $xprop;
+  }
+/**
+ * set calendar property x-prop
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-07
+ * @param string $label
+ * @param string $value
+ * @param array $params optional
+ * @return void
+ */
+  function setXprop( $label, $value, $params=FALSE ) {
+    $xprop['value'] = array( $label => $value);
+    if( empty( $xprop['value'] ))
+      return;
+    $toolbox = new calendarComponent();
+    $xprop['params'] = $toolbox->_setParams( $params );
+    $this->xprop[] = $xprop;
+  }
+/*********************************************************************************/
+/**
+ * get calendar property value/params
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-15
+ * @param string $propName, optional
+ * @param int @propix, optional, if specific property is wanted in case of multiply occurences
+ * @param bool $inclParam=FALSE
+ * @return mixed
+ */
+  function getProperty( $propName=FALSE, $propix=FALSE, $inclParam=FALSE ) {
+    $propName = ( $propName ) ? strtoupper( $propName ) : 'X-PROP';
+    if( !$propix )
+      $propix = ( isset( $this->propix[$propName] )) ? $this->propix[$propName] + 2 : 1;
+    $this->propix[$propName] = --$propix;
+    switch( $propName ) {
+      case 'CALSCALE':
+        if( 0 < $propix ) return FALSE;
+        return ( !empty( $this->calscale )) ? $this->calscale : null;
+        break;
+      case 'METHOD':
+        if( 0 < $propix ) return FALSE;
+        return ( !empty( $this->method )) ? $this->version : null;
+        break;
+      case 'PRODID':
+        if( 0 < $propix ) return FALSE;
+        if( empty( $this->prodid ))
+          $this->_makeProdid();
+        return $this->prodid;
+        break;
+      case 'VERSION':
+        if( 0 < $propix ) return FALSE;
+        return ( !empty( $this->version )) ? $this->version : null;
+        break;
+      default:
+        if( count( $this->xprop ) <= $propix ) return null;
+        return ( $inclParam ) ? $this->xprop[$propix] : $this->xprop[$propix]['value'];
+        break;
+    }
+    return FALSE;
+  }
+/**
+ * general vcalendar property setting
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.21 - 2007-04-15
+ * @param mixed $args variable number of function arguments,
+ *                    first argument is ALWAYS component name!
+ * @return void
+ */
+  function setProperty () {
+    $numargs    = func_num_args();
+    if( 1 >= $numargs )
+      return FALSE;
+    $arglist    = func_get_args();
+    $arglist[0] = strtoupper( $arglist[0] );
+    for( $argix=$numargs; $argix < 3; $argix++ )
+      if( !isset( $arglist[$argix] ))
+        $arglist[$argix] = null;
+    switch( $arglist[0] ) {
+      case 'CALSCALE':
+        $this->setCalscale( $arglist[1] );
+        break;
+      case 'METHOD':
+        $this->setMethod( $arglist[1] );
+        break;
+      case 'VERSION':
+        $this->setVersion( $arglist[1] );
+        break;
+      default:
+        $this->setXprop( $arglist[0], $arglist[1], $arglist[2] );
+        break;
+    }
+  }
+/*********************************************************************************/
+/**
+ * get vcalendar config values or * calendar components
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-22
+ * @param string $config
+ * @return value
+ */
+  function getConfig( $config ) {
+    switch( strtoupper( $config )) {
+      case 'COMPSINFO':
+        unset( $this->compix );
+        $info = array();
+        foreach( $this->components as $cix => $component ) {
+          unset( $component->propix );
+          $info[$cix]['ordno'] = $cix + 1;
+          $info[$cix]['type']  = $component->objName;
+          $info[$cix]['uid']   = $component->getProperty( 'uid' );
+          $info[$cix]['props'] = $component->getConfig( 'propinfo' );
+          $info[$cix]['sub']   = $component->getConfig( 'compsinfo' );
+        }
+        return $info;
+        break;
+      case 'DELIMITER':
+        return $this->delimiter;
+        break;
+      case 'DIRECTORY':
+        if( empty( $this->directory ))
+          $this->directory = '.';
+        return $this->directory;
+        break;
+      case 'DIRFILE':
+        return $this->getConfig( 'directory' ).$this->getConfig( 'delimiter' ).$this->getConfig( 'filename' );
+        break;
+      case 'FILEINFO':
+        return array( $this->getConfig( 'directory' )
+                    , $this->getConfig( 'filename' )
+                    , $this->getConfig( 'filesize' ));
+        break;
+      case 'FILENAME':
+        if( empty( $this->filename )) {
+          if( 'xcal' == $this->format )
+            $this->filename = date( 'YmdHis' ).'.xml'; // recommended xcs.. .
+          else
+            $this->filename = date( 'YmdHis' ).'.ics';
+        }
+        return $this->filename;
+        break;
+      case 'FILESIZE':
+        return filesize( $this->getConfig( 'dirfile' ));
+        break;
+      case 'FORMAT':
+        return $this->format;
+        break;
+      case 'LANGUAGE':
+         /* get language for calendar component as defined in [RFC 1766] */
+        return $this->language;
+        break;
+      case 'NL':
+      case 'NEWLINECHAR':
+        return $this->nl;
+        break;
+      case 'UNIQUE_ID':
+        return $this->unique_id;
+        break;
+    }
+  }
+/**
+ * general vcalendar config setting
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-17
+ * @param string $config
+ * @param string $value
+ * @return void
+ */
+  function setConfig( $config, $value ) {
+    switch( strtoupper( $config )) {
+      case 'DELIMITER':
+        $this->delimiter = $value;
+        break;
+      case 'DIRECTORY':
+        if( @is_writable( $value )) {
+          $this->directory = $value;
+          return TRUE;
+        }
+        else
+          return FALSE;
+        break;
+      case 'FILENAME':
+        if( file_exists($this->getConfig('directory').$this->getConfig('delimiter').$value )) {
+          if( is_readable($this->getConfig('directory').$this->getConfig('delimiter').$value ) &&
+              is_writable($this->getConfig('directory').$this->getConfig('delimiter').$value )) {
+            $this->filename = $value;
+            return TRUE;
+          }
+          else
+            return FALSE;
+        }
+        elseif( @touch( $this->getConfig('directory').$this->getConfig('delimiter').$value )) {
+          $this->filename = $value;
+          return TRUE;
+        }
+        else
+          return FALSE;
+        break;
+      case 'FORMAT':
+        if( 'xcal' == strtolower( $value )) {
+          $this->format             = 'xcal';
+          $this->attributeDelimiter = $this->nl;
+          $this->valueInit          = null;
+        }
+        else {
+          $this->format             = null;
+          $this->attributeDelimiter = ';';
+          $this->valueInit          = ':';
+        }
+        break;
+      case 'LANGUAGE':
+         // set language for calendar component as defined in [RFC 1766]
+        $this->language = $value;
+        break;
+      case 'NL':
+      case 'NEWLINECHAR':
+        $this->nl = $value;
+        break;
+      case 'UNIQUE_ID':
+        $this->unique_id = $value;
+        break;
+    }
+  }
+/*********************************************************************************/
+/**
+ * validDate
+ *
+ * convert input parameters to (valid) iCalcreator date in array format (or FALSE)
+ * if $utc=TRUE and $tz = utc offset ([[+/]-]HHmm) input (local) date array + UTC offset
+ * returns ouput in UTC format date
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-12
+ * @param mixed $year
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param mixed $tz optional
+ * @param bool $utc optional
+ * @return bool false / array $date
+ */
+  function validDate( $year, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $tz=FALSE, $utc=FALSE ) {
+    $input = array();
+    $toolbox = new calendarComponent();
+    $parno = null;
+    if( is_int( $year ) && is_int( $month ) && is_int( $day )) {
+      $input['year']   = $year;
+      $input['month']  = $month;
+      $input['day']    = $day;
+      if(( $hour !== FALSE ) || ( $min !== FALSE ) || ( $sec !== FALSE )) {
+        $parno = 6;
+        if( $hour !== FALSE )
+          $input['hour'] = $hour;
+        if( $min !== FALSE )
+          $input['min']  = $min;
+        if( $sec !== FALSE )
+          $input['sec']  = $sec;
+      }
+      if( $tz !== FALSE ) {
+        $parno = 7;
+        $input['tz']  = $tz;
+      }
+      elseif( !$parno )
+        $parno = 3;
+      $input = $toolbox->_date_time_array( $input, $parno );
+    }
+    elseif( is_array( $year ) && isset( $year['timestamp'] )) {
+      $input        = $toolbox->_date_time_string( date( 'Y-m-d H:i:s', $year['timestamp'] ), 6 );
+      $input['tz']  = ( isset( $year['tz'] )) ? $year['tz'] : null;
+      $utc = ( TRUE === $month ) ? TRUE : FALSE;
+    }
+    elseif( is_array( $year ) && ( in_array( count( $year ), array( 3, 4, 6, 7 )))) {
+      if( isset( $year['tz'] ) || ( 4 == count( $year )) || ( 7 == count( $year )))
+        $parno = 7;
+      elseif( isset( $year['hour'] ) || isset( $year['min'] ) || isset( $year['sec'] ) ||
+            ( 6 == count( $year )))
+        $parno = 6;
+      else
+        $parno = 3;
+      $input = $toolbox->_date_time_array( $year, $parno );
+      $utc = ( TRUE === $month ) ? TRUE : FALSE;
+    }
+    elseif( 8 <= strlen( trim( $year ))) { // ex. 2006-08-03 10:12:18
+      $input = $toolbox->_date_time_string( $year );
+      $utc = ( TRUE === $month ) ? TRUE : FALSE;
+    }
+    else
+      return FALSE;
+    if( !checkdate ( $input['month'], $input['day'], $input['year'] ))
+      return FALSE;
+    if( isset( $input['hour'] ) &&
+        (( 0 > $input['hour'] ) || ( 23 < $input['hour'] )))
+      return FALSE;
+    if( isset( $input['min'] ) &&
+        (( 0 > $input['min'] ) || ( 59 < $input['min'] )))
+      return FALSE;
+    if( isset( $input['sec'] ) &&
+        (( 0 > $input['sec'] ) || ( 59 < $input['sec'] )))
+      return FALSE;
+    if( isset( $input['tz'] ) && ( '' < trim ( $input['tz'] ))) {
+      $input['tz'] = trim( $input['tz'] );
+      if( ctype_digit( $input['tz']{1} )) { // only numeric tz=offset
+        $offset = 0;
+        if( ctype_digit( $input['tz']{0} ))
+          $input['tz'] = '+'.$input['tz'];
+        if((      5 == strlen( $input['tz'] )) &&
+           ( '0000' <= substr( $input['tz'], -4 )) &&
+           ( '9999' >= substr( $input['tz'], -4 )) &&
+             (( '+' == substr( $input['tz'], 0, 1 )) ||
+              ( '-' == substr( $input['tz'], 0, 1 )))) {
+          $hours2sec = substr( $input['tz'], 1, 2 ) * 3600;
+          $min2sec   = substr( $input['tz'], -2 )   *   60;
+          $sign      = substr( $input['tz'], 0, 1 );
+          $offset    = $sign.'1' * ( $hours2sec + $min2sec );
+        }
+        elseif(( 7  == strlen( $input['tz'] )) &&
+         ( '000000' <= substr( $input['tz'], -6 )) &&
+         ( '999999' >= substr( $input['tz'], -6 )) &&
+             (( '+' == substr( $input['tz'], 0, 1 )) ||
+              ( '-' == substr( $input['tz'], 0, 1 )))) {
+          $hours2sec = substr( $input['tz'], 1, 2 ) * 3600;
+          $min2sec   = substr( $input['tz'], 3, 2 ) *   60;
+          $sec       = substr( $input['tz'], -2 );
+          $sign      = substr( $input['tz'], 0, 1 );
+          $offset    = $sign.'1' * ( $hours2sec + $min2sec + $sec );
+        }
+        if( 0 != $offset) {
+          if( !isset( $input['hour'] ))
+            $input['hour'] = 0;
+          if( !isset( $input['min'] ))
+            $input['min'] = 0;
+          if( !isset( $input['sec'] ))
+            $input['sec'] = 0;
+          $input = date('Y-m-d H:i:s\Z', mktime ( $input['hour']
+                                                , $input['min']
+                                                , $input['sec'] + $offset
+                                                , $input['month']
+                                                , $input['day']
+                                                , $input['year']));
+          $parno = ( $utc ) ? 7 : 6 ;
+          $input = $toolbox->_date_time_string( $input, $parno );
+          if( !$utc && isset( $input['tz'] ) && ( 'Z' == $input['tz'] ))
+            unset( $input['tz'] );
+        }
+      }
+    }
+    return $input;
+  }
+/*********************************************************************************/
+/**
+ * add calendar component to container
+ *
+ * alias to setComponent
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-04-24
+ * @param object $component calendar component
+ * @return void
+ */
+  function addComponent( $component ) {
+    $this->setComponent( $component );
+  }
+/**
+ * delete calendar component from container
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-06
+ * @param mixed $arg1 ordno / component type / component uid
+ * @param mixed $arg2 optional, ordno if arg1 = component type
+ * @return void
+ */
+  function deleteComponent( $arg1, $arg2=FALSE  ) {
+    $argType = $index = null;
+    if ( is_int( $arg1 )) {
+      $argType = 'INDEX';
+      $index = --$arg1;
+    }
+    elseif(( strlen( $arg1 ) <= strlen( 'vfreebusy' )) && ( FALSE === strpos( $arg1, '@' ))) {
+      $argType = strtolower( $arg1 );
+      $index = ( is_int( $arg2 )) ? --$arg2 : 0;
+    }
+    $cix1dC = 0;
+    foreach ( $this->components as $cix => $component) {
+      unset( $component->propix );
+      if(( 'INDEX' == $argType ) && ( $index == $cix )) {
+        unset( $this->components[$cix] );
+        return TRUE;
+      }
+      elseif( $argType == $component->objName ) {
+        if( $index == $cix1dC ) {
+          unset( $this->components[$cix] );
+          return TRUE;
+        }
+        $cix1dC++;
+      }
+      elseif( !$argType && ($arg1 == $component->getProperty( 'uid' ))) {
+        unset( $this->components[$cix] );
+        return TRUE;
+      }
+    }
+    return FALSE;
+  }
+/**
+ * get calendar component from container
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-06
+ * @param mixed $arg1 optional, ordno/component type/ component uid
+ * @param mixed $arg2 optional, ordno if arg1 = component type
+ * @return object
+ */
+  function getComponent( $arg1=FALSE, $arg2=FALSE ) {
+    $index = $argType = null;
+    if ( !$arg1 ) {
+      $argType = 'INDEX';
+      $index = $this->compix['INDEX'] =
+        ( isset( $this->compix[$argType] )) ? $this->compix[$argType] + 1 : 1;
+      $index = $index - 1;
+    }
+    elseif ( is_int( $arg1 )) {
+      $argType = 'INDEX';
+      $index = $arg1 - 1;
+      unset( $this->compix );
+    }
+    elseif(( strlen( $arg1 ) <= strlen( 'vfreebusy' )) && ( FALSE === strpos( $arg1, '@' ))) {
+      unset( $this->compix['INDEX'] );
+      $argType = strtolower( $arg1 );
+      if( !$arg2 )
+        $index = $this->compix[$argType] =
+        ( isset( $this->compix[$argType] )) ? $this->compix[$argType] + 1 : 1;
+      else
+        $index = $arg2;
+      $index = $index - 1;
+    }
+    if( isset( $index) && ( $index > end( array_keys( $this->components ))))
+      return FALSE;
+    $cix1gC = 0;
+    foreach ( $this->components as $cix => $component) {
+      unset( $component->propix );
+      if(( 'INDEX' == $argType ) && ( $index == $cix ))
+        return $component;
+      elseif( $argType == $component->objName ) {
+         if( $index == $cix1gC )
+           return $component;
+         $cix1gC++;
+      }
+      elseif( !$argType && ($arg1 == $component->getProperty( 'uid' ))) {
+        unset( $component->propix );
+        return $component;
+      }
+    }
+            /* not found.. . */
+    unset( $this->compix );
+    return false;
+  }
+/**
+ * add calendar component to container
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-04-24
+ * @param object $component calendar component
+ * @param mixed $arg1 optional, ordno/component type/ component uid
+ * @param mixed $arg2 optional, ordno if arg1 = component type
+ * @return void
+ */
+  function setComponent( $component, $arg1=FALSE, $arg2=FALSE  ) {
+    if( '' >= $component->getConfig( 'language'))
+      $component->setConfig( 'language' ,  $this->getConfig( 'language' ));
+    $component->setConfig( 'nl' ,          $this->getConfig( 'nl' ));
+    $component->setConfig( 'unique_id' ,   $this->getConfig( 'unique_id' ));
+    $component->setConfig( 'format' ,      $this->getConfig( 'format' ));
+    if( !in_array( $component->objName, array( 'valarm', 'vtimezone' ))) {
+      unset( $component->propix );
+            /* make sure dtstamp and uid is set */
+      $dummy = $component->getProperty( 'dtstamp' );
+      $dummy = $component->getProperty( 'uid' );
+    }
+    if( !$arg1 ) {
+      $this->components[] = $component;
+      return TRUE;
+    }
+    $argType = $index = null;
+    if ( is_int( $arg1 )) {
+      $argType = 'INDEX';
+      $index = --$arg1;
+    }
+    elseif(( strlen( $arg1 ) <= strlen( 'vfreebusy' )) && ( FALSE === strpos( $arg1, '@' ))) {
+      $argType = strtolower( $arg1 );
+      $index = ( is_int( $arg2 )) ? --$arg2 : 0;
+    }
+    $cix1sC = 0;
+    foreach ( $this->components as $cix => $component2) {
+      unset( $component2->propix );
+      if(( 'INDEX' == $argType ) && ( $index == $cix )) {
+        $this->components[$cix] = $component;
+        return TRUE;
+      }
+      elseif( $argType == $component2->objName ) {
+        if( $index == $cix1sC ) {
+          $this->components[$cix] = $component;
+          return TRUE;
+        }
+        $cix1sC++;
+      }
+      elseif( !$argType && ( $arg1 == $component2->getProperty( 'uid' ))) {
+        $this->components[$cix] = $component;
+        return TRUE;
+      }
+    }
+            /* not found.. . insert ?? .. .*/
+    $this->components[] = $component;
+  }
+/**
+ * parse iCal file into vcalendar, components, properties and parameters
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-17
+ * @param string $filename optional filname (incl. opt. directory/path)
+ * @return bool FALSE if error occurs during parsing
+ *
+ */
+  function parse( $filename=FALSE ) {
+    if( !$filename )
+      $filename = $this->getConfig( 'dirfile' );
+    else {
+      $filename2 = basename( $filename );
+      $directory = str_replace( $filename2, '', $filename );
+      if( $this->getConfig( 'delimiter' ) == substr( $directory, -1 ))
+        $directory = substr( $directory, 0, strlen( $directory ) -1 );
+      $this->setConfig( 'filename', $filename2 );
+      if( !empty( $directory ))
+        $this->setConfig( 'directory', $directory );
+      else
+        $this->setConfig( 'directory', '.' );
+    }
+            /* file error tests */
+    if( !is_file( $filename ))      /* err 1 */
+      return FALSE;
+    if( !is_readable( $filename ))
+      return FALSE;                 /* err 2 */
+    if( !filesize( $filename ))
+      return FALSE;                 /* err 3 */
+    $rows = file( $filename );
+            /* identify and remove begin/end calendar rows */
+    if(( 'BEGIN:VCALENDAR' != strtoupper( trim( $rows[0] ))) &&
+       ( 'END:VCALENDAR'   != strtoupper( trim( $rows[count($rows)-1]))))
+      return FALSE;                 /* err 4 */
+    else {
+      unset( $rows[count($rows)-1] );
+      unset( $rows[0] );
+      $rows = array_values( $rows );
+      if( 1 > count( $rows ))
+        return FALSE;               /* err 5 */
+    }
+    $comp = $subcomp = null;
+    $actcomp = & $this;
+            /* identify components and update unparsed data within component */
+    foreach( $rows as $line ) {
+      if( "\n" == substr( $line, -1 ))
+        $line = substr( $line, 0, strlen( $line ) -1 ).'\n';
+      if( 'END:' == strtoupper( substr( $line, 0, 4 ))) {
+        if( null != $subcomp ) {
+          $comp->setComponent( $subcomp );
+          $subcomp = null;
+        }
+        else {
+          $this->setComponent( $comp );
+          $comp = null;
+        }
+        $actcomp = null;
+        continue;
+      } // end - if ( 'END:' ==.. .
+      elseif( 'BEGIN:' == strtoupper( substr( $line, 0, 6 ))) {
+        $line = str_replace( '\n', '', $line );
+        $compname = strtoupper( substr( $line, 6 ));
+        if( null != $comp ) {
+          if( 'VALARM' == $compname )
+            $subcomp = new valarm();
+          elseif( 'STANDARD' == $compname )
+            $subcomp = new vtimezone( 'STANDARD' );
+          elseif( 'DAYLIGHT' == $compname )
+            $subcomp = new vtimezone( 'DAYLIGHT' );
+          else
+            return FALSE; /* err 6 */
+          $actcomp = & $subcomp;
+        }
+        else {
+          switch( $compname ) {
+            case 'VALARM':
+              $comp = new valarm();
+              break;
+            case 'VEVENT':
+              $comp = new vevent();
+              break;
+            case 'VFREEBUSY';
+              $comp = new vfreebusy();
+              break;
+            case 'VJOURNAL':
+              $comp = new vjournal();
+              break;
+            case 'VTODO':
+              $comp = new vtodo();
+              break;
+            case 'VTIMEZONE':
+              $comp = new vtimezone();
+              break;
+            default:
+              return FALSE; // err 7
+              break;
+          } // end - switch
+          $actcomp = & $comp;
+        }
+        continue;
+      } // end - elsif ( 'BEGIN:'.. .
+            /* update selected component with unparsed data */
+      $actcomp->unparsed[] = $line;
+    } // end - foreach( rows.. .
+            /* parse data for calendar (this) object */
+    if( is_array( $this->unparsed ) && ( 0 < count( $this->unparsed ))) {
+            /* concatenate property values spread over several lines */
+      $lastix    = -1;
+      $propnames = array( 'calscale','method','prodid','version','x-' );
+      $unparsed  = array();
+      foreach( $this->unparsed as $line ) {
+        $newProp = FALSE;
+        foreach ( $propnames as $propname ) {
+          if( $propname == strtolower( substr( $line, 0, strlen( $propname )))) {
+            $newProp = TRUE;
+            break;
+          }
+        }
+        if( $newProp ) {
+          $newProp = FALSE;
+          $lastix++;
+          $unparsed[$lastix]  = $line;
+        }
+        else {
+            /* remove line breaks */
+          if(( '\n' == substr( $unparsed[$lastix], - 2 )) &&
+             (  ' ' == substr( $line, 0, 1 ))) {
+            $unparsed[$lastix] = substr( $unparsed[$lastix], 0, strlen( $unparsed[$lastix] ) - 2 );
+            $line = substr( $line, 1 );
+          }
+          $unparsed[$lastix] .= $line;
+        }
+      }
+      foreach( $unparsed as $line ) {
+        if( '\n' == substr( $line, - 2 ))
+          $line = substr( $line, 0, strlen( $line ) - 2 );
+            /* get propname */
+        $cix = $propname = null;
+        for( $cix=0; $cix < strlen( $line ); $cix++ ) {
+          if( in_array( $line{$cix}, array( ':', ';' )))
+            break;
+          else
+            $propname .= $line{$cix};
+        }
+            /* ignore version/prodid properties */
+        if( in_array( strtoupper( $propname ), array( 'VERSION', 'PRODID' )))
+          continue;
+        $line = substr( $line, $cix);
+            /* separate attributes from value */
+        $attr   = array();
+        $attrix = -1;
+        for( $cix=0; $cix < strlen( $line ); $cix++ ) {
+          if((       ':'   == $line{$cix} ) &&
+             (       '://' != substr( $line, $cix, 3 )) &&
+             ( 'mailto:'   != strtolower( substr( $line, $cix - 6, 7 )))) {
+            $attrEnd = TRUE;
+            if( ctype_digit( $line{$cix+1} )) { // an URI with a portnr??
+              for( $c2ix = $cix; 3 < $c2ix; $c2ix-- ) {
+                if( '://' == substr( $line, $c2ix - 2, 3 )) {
+                  $attrEnd = FALSE;
+                  break; // an URI with a portnr!!
+                }
+              }
+            }
+            if( $attrEnd) {
+              $line = substr( $line, $cix + 1 );
+              break;
+            }
+          }
+          if( ';' == $line{$cix} )
+            $attr[++$attrix] = null;
+          else
+            $attr[$attrix] .= $line{$cix};
+        }
+
+            /* make attributes in array format */
+        $propattr = array();
+        foreach( $attr as $attribute ) {
+          $attrsplit = explode( '=', $attribute, 2 );
+          if( 1 < count( $attrsplit ))
+            $propattr[$attrsplit[0]] = $attrsplit[1];
+          else
+            $propattr[] = $attribute;
+        }
+            /* update Property */
+        $this->setProperty( $propname, $line, $propattr );
+      } // end - foreach( $this->unparsed.. .
+    } // end - if( is_array( $this->unparsed.. .
+            /* parse Components */
+    if( is_array( $this->components ) && ( 0 < count( $this->components ))) {
+      for( $six = 0; $six < count( $this->components ); $six++ )
+        $this->components[$six]->parse();
+    }
+  }
+/*********************************************************************************/
+/**
+ * creates formatted output for calendar object instance
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.22 - 2007-04-07
+ * @return string
+ */
+  function createCalendar() {
+    $calendarInit1 = $calendarInit2 = $calendarxCaldecl = $calendarStart = $calendar = null;
+    switch( $this->format ) {
+      case 'xcal':
+        $calendarInit1 = '<?xml version="1.0" encoding="UTF-8"?>'.$this->nl.
+                         '<!DOCTYPE iCalendar PUBLIC "-//IETF//DTD XCAL/iCalendar XML//EN"'.$this->nl.
+                         '"http://www.ietf.org/internet-drafts/draft-ietf-calsch-many-xcal-01.txt"';
+        $calendarInit2 = '>'.$this->nl;
+        $calendarStart = '<vcalendar';
+        break;
+      default:
+        $calendarStart = 'BEGIN:VCALENDAR'.$this->nl;
+        break;
+    }
+    $calendarStart .= $this->createCalscale();
+    $calendarStart .= $this->createMethod();
+    $calendarStart .= $this->createProdid();
+    $calendarStart .= $this->createVersion();
+    switch( $this->format ) {
+      case 'xcal':
+        $nlstrlen = strlen( $this->nl );
+        if( $this->nl == substr( $calendarStart, ( 0 - $nlstrlen )))
+          $calendarStart = substr( $calendarStart, 0, ( strlen( $calendarStart ) - $nlstrlen ));
+        $calendarStart .= '>'.$this->nl;
+        break;
+      default:
+        break;
+    }
+    $calendar .= $this->createXprop();
+    foreach( $this->components as $component ) {
+      if( '' >= $component->getConfig( 'language'))
+        $component->setConfig( 'language',  $this->getConfig( 'language' ));
+      $component->setConfig( 'nl',          $this->getConfig( 'nl' ));
+      $component->setConfig( 'unique_id',   $this->getConfig( 'unique_id' ));
+      $component->setConfig( 'format',      $this->getConfig( 'format' ));
+      $calendar .= $component->createComponent( $this->xcaldecl );
+    }
+    if(( 0 < count( $this->xcaldecl )) && ( 'xcal' == $this->format )) { // xCal only
+      $calendarInit1 .= $this->nl.'['.$this->nl;
+      $old_xcaldecl = array();
+      foreach( $this->xcaldecl as $declix => $declPart ) {
+        if(( 0 < count( $old_xcaldecl)) &&
+           ( in_array( $declPart['uri'],      $old_xcaldecl['uri'] )) &&
+           ( in_array( $declPart['external'], $old_xcaldecl['external'] )))
+          continue; // no duplicate uri and ext. references
+        $calendarxCaldecl .= '<!';
+        foreach( $declPart as $declKey => $declValue ) {
+          switch( $declKey ) {                    // index
+            case 'xmldecl':                       // no 1
+              $calendarxCaldecl .= $declValue.' ';
+              break;
+            case 'uri':                           // no 2
+              $calendarxCaldecl .= $declValue.' ';
+              $old_xcaldecl['uri'][] = $declValue;
+              break;
+            case 'ref':                           // no 3
+              $calendarxCaldecl .= $declValue.' ';
+              break;
+            case 'external':                      // no 4
+              $calendarxCaldecl .= '"'.$declValue.'" ';
+              $old_xcaldecl['external'][] = $declValue;
+              break;
+            case 'type':                          // no 5
+              $calendarxCaldecl .= $declValue.' ';
+              break;
+            case 'type2':                         // no 6
+              $calendarxCaldecl .= $declValue;
+              break;
+          }
+        }
+        $calendarxCaldecl .= '>'.$this->nl;
+      }
+      $calendarInit2 = ']'.$calendarInit2;
+    }
+    switch( $this->format ) {
+      case 'xcal':
+        $calendar .= '</vcalendar>'.$this->nl;
+        break;
+      default:
+        $calendar .= 'END:VCALENDAR'.$this->nl;
+        break;
+    }
+    return $calendarInit1.$calendarxCaldecl.$calendarInit2.$calendarStart.$calendar;
+  }
+/**
+ * redirect file to user
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.22 - 2007-04-07
+ * @return redirect
+ */
+  function _redirectCalendar() {
+    $dirfile = $this->getConfig( 'dirfile' );
+//    if( headers_sent( $filename, $linenum ))
+//      die( "Headers already sent in $filename on line $linenum\n" );
+    if( 'xcal' == $this->format )
+      header( 'Content-Type: application/calendar+xml; charset=utf-8' );
+    else
+      header( 'Content-Type: text/calendar; charset=utf-8' );
+    header( 'Content-Length: '.$this->getConfig( 'filesize' ));
+    header( 'Content-Disposition: attachment; filename="'.basename( $dirfile ).'"' );
+            /* disable caching */
+    header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
+    header( 'Expires: Mon, 26 Jul 1997 05:00:00 GMT' );
+    header( 'Pragma: no-cache' );
+    $fp = fopen( $dirfile, 'r' );
+    fpassthru( $fp );
+    fclose( $fp );
+    die();
+  }
+/**
+ * a HTTP redirect header is sent with saved calendar
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.22 - 2007-04-07
+ * @param string $directory optional
+ * @param string $filename optional
+ * @param string $delimiter optional
+ * @return redirect
+ */
+  function returnCalendar( $directory=FALSE, $filename=FALSE, $delimiter=DIRECTORY_SEPARATOR ) {
+    if( $this->saveCalendar ( $directory, $filename, $delimiter ))
+      $this->_redirectCalendar ();
+  }
+/**
+ * save content in a file
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.22 - 2007-04-06
+ * @param string $directory optional
+ * @param string $filename optional
+ * @param string $delimiter optional
+ * @return bool
+ */
+  function saveCalendar( $directory=FALSE, $filename=FALSE, $delimiter=DIRECTORY_SEPARATOR ) {
+    if( $directory )
+      $this->setConfig( 'directory', $directory );
+    if( $filename )
+      $this->setConfig( 'filename',  $filename );
+    if( $delimiter )
+      $this->setConfig( 'delimiter', $delimiter );
+    $dirfile = $this->getConfig( 'dirfile' );
+    $iCalFile = fopen( $dirfile, 'w' );
+    if ( $iCalFile ) {
+      fputs( $iCalFile, $this->createCalendar() );
+      fclose( $iCalFile );
+      return TRUE;
+    }
+    else
+      return FALSE;
+  }
+/**
+ * if recent version of file exists (max one hour), an HTTP redirect header is sent
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-15
+ * @param string $directory optional
+ * @param string $filename optional
+ * @param string $delimiter optional
+ * @param int timeout optional, default 36001
+ * @return redirect/FALSE
+ */
+  function useCachedCalendar( $directory=FALSE, $filename=FALSE, $delimiter=DIRECTORY_SEPARATOR, $timeout=3600) {
+    if( $directory )
+      $this->setConfig( 'directory', $directory );
+    if( $filename )
+      $this->setConfig( 'filename',  $filename );
+    if( $delimiter )
+      $this->setConfig( 'delimiter', $delimiter );
+    if( 0 >= $this->getConfig( 'filesize' ))
+      return FALSE;
+    $dirfile = $this->getConfig( 'dirfile' );
+    if( time() - filemtime( $dirfile ) < $timeout)
+      $this->_redirectCalendar ();
+    else
+      return FALSE;
+  }
+}
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ *  abstract class for calendar components
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.8 - 2006-11-27
+ */
+class calendarComponent {
+            //  component property variables
+  var $action;
+  var $attach;
+  var $attendee;
+  var $categories;
+  var $comment;
+  var $completed;
+  var $contact;
+  var $class;
+  var $created;
+  var $description;
+  var $dtend;
+  var $dtstart;
+  var $dtstamp;
+  var $due;
+  var $duration;
+  var $exdate;
+  var $exrule;
+  var $freebusy;
+  var $geo;
+  var $lastmodified;
+  var $location;
+  var $organizer;
+  var $percentcomplete;
+  var $priority;
+  var $rdate;
+  var $recurrenceid;
+  var $relatedto;
+  var $repeat;
+  var $requeststatus;
+  var $resources;
+  var $rrule;
+  var $sequence;
+  var $status;
+  var $summary;
+  var $transp;
+  var $trigger;
+  var $tzid;
+  var $tzname;
+  var $tzoffsetfrom;
+  var $tzoffsetto;
+  var $tzurl;
+  var $uid;
+  var $url;
+  var $xprop;
+            //  component subcomponents container
+  var $subcomponents;
+            //  component config variables
+  var $language;
+  var $nl;
+  var $unique_id;
+  var $format;
+  var $objName; // created automatically at instance creation
+            //  component internal variables
+  var $componentStart1;
+  var $componentStart2;
+  var $componentEnd1;
+  var $componentEnd2;
+  var $elementStart1;
+  var $elementStart2;
+  var $elementEnd1;
+  var $elementEnd2;
+  var $intAttrDelimiter;
+  var $attributeDelimiter;
+  var $valueInit;
+            //  component xCal declaration container
+  var $xcaldecl;
+/**
+ * constructor for calendar component object
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.8.5 - 2006-10-06
+ */
+  function calendarComponent() {
+    $this->objName         = get_class ( $this );
+
+    $this->action          = array();
+    $this->attach          = array();
+    $this->attendee        = array();
+    $this->categories      = array();
+    $this->class           = array();
+    $this->comment         = array();
+    $this->completed       = array();
+    $this->contact         = array();
+    $this->created         = array();
+    $this->description     = array();
+    $this->dtend           = array();
+    $this->dtstart         = array();
+    $this->dtstamp         = array();
+    $this->due             = array();
+    $this->duration        = array();
+    $this->exdate          = array();
+    $this->exrule          = array();
+    $this->freebusy        = array();
+    $this->geo             = array();
+    $this->lastmodified    = array();
+    $this->location        = array();
+    $this->organizer       = array();
+    $this->percentcomplete = array();
+    $this->priority        = array();
+    $this->rdate           = array();
+    $this->recurrenceid    = array();
+    $this->relatedto       = array();
+    $this->repeat          = array();
+    $this->requeststatus   = array();
+    $this->resources       = array();
+    $this->sequence        = array();
+    $this->rrule           = array();
+    $this->status          = array();
+    $this->summary         = array();
+    $this->transp          = array();
+    $this->trigger         = array();
+    $this->tzid            = array();
+    $this->tzname          = array();
+    $this->tzoffsetfrom    = array();
+    $this->tzoffsetto      = array();
+    $this->tzurl           = array();
+    $this->uid             = array();
+    $this->url             = array();
+    $this->xprop           = array();
+
+    $this->subcomponents   = array();
+
+    $this->language        = null;
+    $this->nl              = null;
+    $this->unique_id       = null;
+    $this->xcaldecl        = array();
+
+    $this->_makeDtstamp();
+  }
+/*********************************************************************************/
+/**
+ * Property Name: ACTION
+ */
+/**
+ * creates formatted output for calendar component property action
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createAction() {
+    if( !isset( $this->action['value'] ))
+      return;
+    $attributes = $this->_createParams( $this->action['params'] );
+    return $this->_createElement( 'ACTION', $attributes, $this->action['value'] );
+  }
+/**
+ * set calendar component property action
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.2 - 2006-11-16
+ * @param string $value  "AUDIO" / "DISPLAY" / "EMAIL" / "PROCEDURE"
+ * @param mixed $params
+ * @return void
+ */
+  function setAction( $value, $params=FALSE ) {
+    $this->action['value']  = $value;
+    $this->action['params'] = $this->_setParams( $params );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: ATTACH
+ */
+/**
+ * creates formatted output for calendar component property attach
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createAttach() {
+    $cnt = count( $this->attach );
+    if( 0 >= $cnt )
+      return;
+    $output    = null;
+    foreach( $this->attach as $attachPart ) {
+      $attributes = $this->_createParams( $attachPart['params'] );
+      $output    .= $this->_createElement( 'ATTACH', $attributes, $attachPart['value'] );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property attach
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.22 - 2007-04-10
+ * @param string $value
+ * @param string $params
+ * @return void
+ */
+  function setAttach( $value, $params=FALSE) {
+    $attach           = array();
+    $attach['value']  = $value ;
+    $attach['params'] = $this->_setParams( $params );
+    $this->attach[]   = $attach;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: ATTENDEE
+ */
+/**
+ * creates formatted output for calendar component property attendee
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-20
+ * @return string
+ */
+  function createAttendee() {
+    $cnt = count( $this->attendee );
+    if( 0 >= $cnt )
+      return;
+    $attendees = null;
+    foreach( $this->attendee as $attendeePart ) {                      // start foreach 1
+      $attendee1 = $attendee2 = $attendeeLANG = $attendeeCN = null;
+      foreach( $attendeePart as $paramlabel => $paramvalue ) {         // start foreach 2
+        if( 'value' == $paramlabel ) {
+          $attendee2  .= 'MAILTO:'.$paramvalue;
+        }
+        elseif(( 'params' == $paramlabel ) && ( is_array( $paramvalue ))) { // start elseif
+          foreach( $paramvalue as $optparamlabel => $optparamvalue ) { // start foreach 3
+            $attendee11 = $attendee12 = null;
+            if( is_int( $optparamlabel )) {
+              $attendee1 .= $this->intAttrDelimiter.$optparamvalue;
+              continue;
+            }
+            switch( $optparamlabel ) {                                 // start switch
+              case 'CUTYPE':
+              case 'PARTSTAT':
+              case 'ROLE':
+              case 'RSVP':
+                $attendee1 .= $this->intAttrDelimiter.$optparamlabel.'="'.$optparamvalue.'"';
+                break;
+              case 'SENT-BY':
+                $attendee1 .= $this->intAttrDelimiter.'SENT-BY="MAILTO:'.$optparamvalue.'"';
+                break;
+              case 'MEMBER':
+                $attendee11 = $this->intAttrDelimiter.'MEMBER=';
+              case 'DELEGATED-TO':
+                $attendee11 = ( !$attendee11 ) ? $this->intAttrDelimiter.'DELEGATED-TO='   : $attendee11;
+              case 'DELEGATED-FROM':
+                $attendee11 = ( !$attendee11 ) ? $this->intAttrDelimiter.'DELEGATED-FROM=' : $attendee11;
+                foreach( $optparamvalue  as $cix => $calUserAddress ) {
+                  $attendee12 .= ( $cix ) ? ',' : null;
+                  $attendee12 .= '"MAILTO:'.$calUserAddress.'"';
+                }
+                $attendee1  .= $attendee11.$attendee12;
+                break;
+              case 'CN':
+                $attendeeCN .= $this->intAttrDelimiter.'CN="'.$optparamvalue.'"';
+                break;
+              case 'DIR':
+                $attendee1 .= $this->intAttrDelimiter.'DIR="'.$optparamvalue.'"';
+                break;
+              case 'LANGUAGE':
+                $attendeeLANG .= $this->intAttrDelimiter.'LANGUAGE='.$optparamvalue;
+                break;
+              default:
+                $attendee1 .= $this->intAttrDelimiter."$optparamlabel=$optparamvalue";
+                break;
+            }    // end switch
+          }      // end foreach 3
+        }        // end elseif
+      }          // end foreach 2
+      $attendees .= $this->_createElement( 'ATTENDEE', $attendee1.$attendeeLANG.$attendeeCN, $attendee2 );
+    }              // end foreach 1
+    return $attendees;
+  }
+/**
+ * set calendar component property attach
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-24
+ * @param string $value
+ * @param array $params optional
+ * @return void
+ */
+  function setAttendee( $value, $params=FALSE ) {
+    $value = str_replace ( 'MAILTO:', '', $value );
+    $value = str_replace ( 'mailto:', '', $value );
+    $attendee = array( 'value' => $value, 'params' => array() );
+    if( is_array($params )) {
+      $optarrays = array();
+      foreach( $params as $optparamlabel => $optparamvalue ) {
+        $optparamlabel = strtoupper( $optparamlabel );
+        switch( $optparamlabel ) {
+          case 'MEMBER':
+          case 'DELEGATED-TO':
+          case 'DELEGATED-FROM':
+            if( is_array( $optparamvalue )) {
+              foreach( $optparamvalue as $part ) {
+                $part = str_replace( 'MAILTO:', '', $part );
+                $part = str_replace( 'mailto:', '', $part );
+                if(( '"' == $part{0} ) && ( '"' == $part{strlen($part)-1} ))
+                  $part = substr( $part, 1, ( strlen($part)-2 ));
+                $optarrays[$optparamlabel][] = $part;
+              }
+            }
+            else {
+              $part = str_replace( 'MAILTO:', '', $optparamvalue );
+              $part = str_replace( 'mailto:', '', $part );
+              if(( '"' == $part{0} ) && ( '"' == $part{strlen($part)-1} ))
+                $part = substr( $part, 1, ( strlen($part)-2 ));
+              $optarrays[$optparamlabel][] = $part;
+            }
+            break;
+          default:
+            if( 'SENT-BY' ==  $optparamlabel ) {
+              $optparamvalue = str_replace( 'MAILTO:', '', $optparamvalue );
+              $optparamvalue = str_replace( 'mailto:', '', $optparamvalue );
+            }
+            if(( '"' == substr( $optparamvalue, 0, 1 )) &&
+               ( '"' == substr( $optparamvalue, -1 )))
+              $optparamvalue = substr( $optparamvalue, 1, ( strlen( $optparamvalue ) - 2 ));
+            $attendee['params'][$optparamlabel] = $optparamvalue;
+            break;
+        } // end switch( $optparamlabel.. .
+      } // end foreach( $optparam.. .
+      foreach( $optarrays as $optparamlabel => $optparams )
+        $attendee['params'][$optparamlabel] = $optparams;
+    }
+        // remove defaults
+    if( isset( $attendee['params']['CUTYPE' ] )  &&
+       ( strtoupper( $attendee['params']['CUTYPE' ] )  == 'INDIVIDUAL' ))
+      unset( $attendee['params']['CUTYPE' ] );
+    if( isset( $attendee['params']['PARTSTAT'] ) &&
+       ( strtoupper( $attendee['params']['PARTSTAT'] ) == 'NEEDS-ACTION' ))
+      unset( $attendee['params']['PARTSTAT'] );
+    if( isset( $attendee['params']['ROLE'] )     &&
+       ( strtoupper( $attendee['params']['ROLE'] )     == 'REQ-PARTICIPANT' ))
+      unset( $attendee['params']['ROLE'] );
+    if( isset( $attendee['params']['RSVP'] )     &&
+       ( strtoupper( $attendee['params']['RSVP'] )     == 'FALSE' ))
+      unset( $attendee['params']['RSVP'] );
+        // check language setting
+    if( isset( $attendee['params']['CN' ] )) {
+      $lang = $this->getConfig( 'language' );
+      if( !isset( $attendee['params']['LANGUAGE' ] ) && !empty( $lang ))
+        $attendee['params']['LANGUAGE' ] = $lang;
+    }
+    $this->attendee[] = $attendee;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: CATEGORIES
+ */
+/**
+ * creates formatted output for calendar component property categories
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-18
+ * @return string
+ */
+  function createCategories() {
+    $cnt = count( $this->categories );
+    if( 0 >= $cnt )
+      return;
+    $output = null;
+    foreach( $this->categories as $category ) {
+      $attributes = $this->_createParams( $category['params'], array( 'LANGUAGE' ));
+      $output    .= $this->_createElement( 'CATEGORIES', $attributes, $category['value'] );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property categories
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-18
+ * @param mixed $value
+ * @param array $params optional
+ * @return void
+ */
+  function setCategories( $value, $params=FALSE ) {
+    $category = array();
+    $value    = ( is_array( $value )) ? implode( ',', $value ) : $value;
+    $value    = str_replace( ', ', ',', $value );
+    $value    = str_replace( ' ,', ',', $value );
+    $category['value']  = $value;
+    $category['params'] = $this->_setParams( $params );
+    $this->categories[]   = $category;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: CLASS
+ */
+/**
+ * creates formatted output for calendar component property class
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createClass() {
+    $cnt = count( $this->class );
+    if( 0 >= $cnt )
+      return;
+    $attributes = $this->_createParams( $this->class['params'] );
+    return $this->_createElement( 'CLASS', $attributes, $this->class['value'] );
+  }
+/**
+ * set calendar component property class
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2003-03-18
+ * @param string $value "PUBLIC" / "PRIVATE" / "CONFIDENTIAL" / iana-token / x-name
+ * @param array $params optional
+ * @return void
+ */
+  function setClass( $value, $params=FALSE ) {
+    $this->class['value']  = $value;
+    $this->class['params'] = $this->_setParams( $params );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: COMMENT
+ */
+/**
+ * creates formatted output for calendar component property comment
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createComment() {
+    $cnt = count( $this->comment );
+     if( 0 >= $cnt )
+      return;
+    $comment = null;
+    foreach( $this->comment as $commentPart ) {
+      $attributes = $this->_createParams( $commentPart['params'], array( 'ALTREP', 'LANGUAGE' ));
+      $content    = $this->_strrep( $commentPart['value'] );
+      $comment   .= $this->_createElement( 'COMMENT', $attributes, $content );
+    }
+    return $comment;
+  }
+/**
+ * set calendar component property comment
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param string $value
+ * @param array $params optional
+ * @return void
+ */
+  function setComment( $value, $params=FALSE ) {
+    $comment['value']  = $value;
+    $comment['params'] = $this->_setParams( $params );
+    $this->comment[]   = $comment;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: COMPLETED
+ */
+/**
+ * creates formatted output for calendar component property completed
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createCompleted( ) {
+    if( !isset( $this->completed['value']['year'] )  &&
+        !isset( $this->completed['value']['month'] ) &&
+        !isset( $this->completed['value']['day'] )   &&
+        !isset( $this->completed['value']['hour'] )  &&
+        !isset( $this->completed['value']['min'] )   &&
+        !isset( $this->completed['value']['sec'] ))
+      return;
+    $formatted  = $this->_format_date_time( $this->completed['value'], 7 );
+    $attributes = $this->_createParams( $this->completed['params'] );
+    return $this->_createElement( 'COMPLETED', $attributes, $formatted );
+  }
+/**
+ * set calendar component property completed
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param mixed $year
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param array $params optional
+ * @return void
+ */
+  function setCompleted( $year, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $params=FALSE ) {
+    if( is_array( $year ) &&
+      (( 6 == count( $year )) ||
+       ( array_key_exists( 'year', $year )))) {
+      $this->completed['value']  = $this->_date_time_array( $year, 6 );
+      $this->completed['params'] = $this->_setParams( $month );
+    }
+    elseif( is_array( $year ) && isset( $year['timestamp'] )) {
+      $this->completed['value']  = $this->_date_time_string( date( 'Y-m-d H:i:s', $year['timestamp'] ), 6 );
+      $this->completed['params'] = $this->_setParams( $month );
+    }
+    elseif( 8 <= strlen( trim( $year ))) { // ex. 2006-08-03 10:12:18
+      $this->completed['value']  = $this->_date_time_string( $year, 6 );
+      $this->completed['params'] = $this->_setParams( $month );
+    }
+    else {
+      $this->completed['value']  = array('year'  => $year
+                                       , 'month' => $month
+                                       , 'day'   => $day
+                                       , 'hour'  => $hour
+                                       , 'min'   => $min
+                                       , 'sec'   => $sec);
+      $this->completed['params'] = $this->_setParams( $params );
+    }
+    if( !isset( $this->completed['value']['hour'] ))
+      $this->completed['value']['hour'] = 0;
+    if( !isset( $this->completed['value']['min'] ))
+      $this->completed['value']['min'] = 0;
+    if( !isset( $this->completed['value']['sec'] ))
+      $this->completed['value']['sec'] = 0;
+    $this->completed['value']['tz'] = 'Z';
+  }
+/*********************************************************************************/
+/**
+ * Property Name: CONTACT
+ */
+/**
+ * creates formatted output for calendar component property contact
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-24
+ * @return string
+ */
+  function createContact() {
+    $cnt = count( $this->contact );
+    if( 0 >= $cnt )
+      return;
+    $output = null;
+    foreach( $this->contact as $contact ) {
+      $attributes = $this->_createParams( $contact['params'], array( 'ALTREP', 'LANGUAGE' ));
+      $content    = $this->_strrep( $contact['value'] );
+      $output    .= $this->_createElement( 'CONTACT', $attributes, $content );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property contact
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-24
+ * @param string $value
+ * @param array $params optional
+ * @return void
+ */
+  function setContact( $value, $params=FALSE ) {
+    $contact['value']  = $value;
+    $contact['params'] = $this->_setParams( $params );
+    if( isset( $contact['params']['ALTREP'] ) &&
+       ( '"' == substr( $contact['params']['ALTREP'], 0, 1 )) &&
+       ( '"' == substr( $contact['params']['ALTREP'], -1 )))
+      $contact['params']['ALTREP'] =
+        substr( $contact['params']['ALTREP'], 1, ( strlen( $contact['params']['ALTREP'] ) - 2 ));
+    $this->contact[] = $contact;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: CREATED
+ */
+/**
+ * creates formatted output for calendar component property created
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createCreated() {
+    if( !isset( $this->created['value']['year'] )  &&
+        !isset( $this->created['value']['month'] ) &&
+        !isset( $this->created['value']['day'] )   &&
+        !isset( $this->created['value']['hour'] )  &&
+        !isset( $this->created['value']['min'] )   &&
+        !isset( $this->created['value']['sec'] ))
+      return;
+    $formatted  = $this->_format_date_time( $this->created['value'], 7 );
+    $attributes = $this->_createParams( $this->created['params'] );
+    return $this->_createElement( 'CREATED', $attributes, $formatted );
+  }
+/**
+ * set calendar component property created
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-17
+ * @param mixed $year optional
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param mixed $params optional
+ * @return void
+ */
+  function setCreated( $year=FALSE, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $params=FALSE ) {
+    if( !isset( $year )) {
+      $year = date('Ymd\THis', mktime ( date( 'H' ), date( 'i' ), date( 's' ) - date( 'Z'), date( 'm' ), date( 'd' ), date( 'Y' )));
+    }
+    if( is_array( $year ) &&
+      (( 6 == count( $year )) ||
+       ( array_key_exists( 'year', $year )))) {
+      $this->created['value']  = $this->_date_time_array( $year, 7 );
+      $this->created['params'] = $this->_setParams( $month );
+    }
+    elseif( is_array( $year ) && isset( $year['timestamp'] )) {
+      $this->created['value']  = $this->_date_time_string( date( 'Y-m-d H:i:s', $year['timestamp'] ), 6 );
+      $this->created['params'] = $this->_setParams( $month );
+    }
+    elseif( 8 <= strlen( trim( $year ))) { // ex. 2006-08-03 10:12:18
+      $this->created['value']  = $this->_date_time_string( $year, 7 );
+      $this->created['params'] = $this->_setParams( $month );
+    }
+    else {
+      $this->created['value']  = array( 'year'  => $year
+                                      , 'month' => $month
+                                      , 'day'   => $day
+                                      , 'hour'  => $hour
+                                      , 'min'   => $min
+                                      , 'sec'   => $sec );
+      $this->created['params'] = $this->_setParams( $params );
+    }
+    if( !isset( $this->created['value']['hour'] ))
+      $this->created['value']['hour'] = 0;
+    if( !isset( $this->created['value']['min'] ))
+      $this->created['value']['min'] = 0;
+    if( !isset( $this->created['value']['sec'] ))
+      $this->created['value']['sec'] = 0;
+    $this->created['value']['tz'] = 'Z';
+  }
+/*********************************************************************************/
+/**
+ * Property Name: DESCRIPTION
+ */
+/**
+ * creates formatted output for calendar component property description
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createDescription() {
+    $cnt = count( $this->description );
+    if( 0 >= $cnt )
+      return;
+    $descriptions    = null;
+    foreach( $this->description as $description ) {
+      $attributes    = $this->_createParams( $description['params'], array( 'ALTREP', 'LANGUAGE' ));
+      $content       = $this->_strrep( $description['value'] );
+      $descriptions .= $this->_createElement( 'DESCRIPTION', $attributes, $content );
+    }
+    return $descriptions;
+  }
+/**
+ * set calendar component property description
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param string $value
+ * @param array $params optional
+ * @return void
+ */
+  function setDescription( $value, $params=FALSE ) {
+    $description['value']  = $value;
+    $description['params'] = $this->_setParams( $params );
+    $this->description[]   = $description;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: DTEND
+ */
+/**
+ * creates formatted output for calendar component property dtend
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.19 - 2007-03-27
+ * @return string
+ */
+  function createDtend() {
+    if( !isset( $this->dtend['value']['year'] )  &&
+        !isset( $this->dtend['value']['month'] ) &&
+        !isset( $this->dtend['value']['day'] )   &&
+        !isset( $this->dtend['value']['hour'] )  &&
+        !isset( $this->dtend['value']['min'] )   &&
+        !isset( $this->dtend['value']['sec'] ))
+      return;
+    $formatted  = $this->_format_date_time( $this->dtend['value'] );
+    $attributes = $this->_createParams( $this->dtend['params'] );
+    return $this->_createElement( 'DTEND', $attributes, $formatted );
+  }
+/**
+ * set calendar component property dtend
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-13
+ * @param mixed $year
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param string $tz optional
+ * @param array params optional
+ * @return void
+ */
+  function setDtend( $year, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $tz=FALSE, $params=FALSE ) {
+    $parno = null;
+    if( is_array( $year ) && ( in_array( count( $year ), array( 3, 4, 6, 7 )))) {
+      $this->dtend['params'] = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ));
+      if( isset( $this->dtend['params']['TZID'] ))
+        $year['tz'] = $this->dtend['params']['TZID'];
+      $hitval = ( !empty( $year['tz'] ) || !empty( $year[6] ) || ( 4 == count( $year ))) ? 7 : 6;
+      $parno = $this->_existRem( $this->dtend['params'], 'VALUE', 'DATE-TIME', $hitval );
+      if( !isset( $parno )) $parno = $this->_existRem( $this->dtend['params'], 'VALUE', 'DATE', 3 );
+      if( !isset( $parno )) $parno = count( $year );
+      $this->dtend['value']  = $this->_date_time_array( $year, $parno );
+    }
+    elseif( is_array( $year ) && isset( $year['timestamp'] )) {
+      $this->dtend['params'] = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ));
+      if( isset( $this->dtend['params']['TZID'] ))
+        $year['tz'] = $this->dtend['params']['TZID'];
+      $tz    = ( isset( $year['tz'] )) ? ' '.$year['tz'] : null;
+      $hitval = ( !empty( $tz )) ? 7 : 6;
+      $parno = $this->_existRem( $this->dtend['params'], 'VALUE', 'DATE-TIME', $hitval );
+      if( !isset( $parno )) $parno = $this->_existRem( $this->dtend['params'], 'VALUE', 'DATE', 3 );
+      if( !isset( $parno )) $parno = $hitval;
+      $this->dtend['value']  = $this->_date_time_string( date( 'Y-m-d H:i:s', $year['timestamp'] ).$tz, $parno );
+    }
+    elseif( 8 <= strlen( trim( $year ))) { // ex. 2006-08-03 10:12:18
+      $this->dtend['params'] = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ));
+      $parno = $this->_existRem( $this->dtend['params'], 'VALUE', 'DATE-TIME', 7 );
+      if( !isset( $parno )) $parno = $this->_existRem( $this->dtend['params'], 'VALUE', 'DATE', 3 );
+      $this->dtend['value']  = $this->_date_time_string( $year, $parno );
+      if( isset( $this->dtend['params']['TZID'] ))
+        $this->dtend['value']['tz'] = $this->dtend['params']['TZID'];
+    }
+    else {
+      $this->dtend['params'] = $this->_setParams( $params, array( 'VALUE' => 'DATE-TIME' ));
+      if( isset( $this->dtend['params']['TZID'] ))
+        $tz = $this->dtend['params']['TZID'];
+      $hitval = ( !empty( $tz )) ? 7 : null;
+      $parno = $this->_existRem( $this->dtend['params'], 'VALUE', 'DATE-TIME', $hitval );
+      if( !isset( $parno )) $parno = $this->_existRem( $this->dtend['params'], 'VALUE', 'DATE', 3 );
+      $this->dtend['value']  = array( 'year'  => $year
+                                     ,'month' => $month
+                                     ,'day'   => $day );
+      if( 3 != $parno ) {
+        $this->dtend['value']['hour'] = ( $hour ) ? $hour : '0';
+        $this->dtend['value']['min']  = ( $min )  ? $min  : '0';
+        $this->dtend['value']['sec']  = ( $sec )  ? $sec  : '0';
+        if( !empty( $tz ))
+          $this->dtend['value']['tz'] = $tz;
+      }
+    }
+    if( 3 == $parno ) {
+      $this->dtend['params']['VALUE'] = 'DATE';
+      unset( $this->dtend['value']['tz'] );
+      unset( $this->dtend['params']['TZID'] );
+    }
+    if( !empty( $this->dtend['value']['tz'] )   &&
+         ( $this->dtend['value']['tz'] != 'Z' ) &&
+      ( !( in_array($this->dtend['value']['tz']{0}, array( '+', '-' )) &&
+           ctype_digit( substr( $this->dtend['value']['tz'], 1 ))) &&
+        !ctype_digit( $this->dtend['value']['tz'] ) ) ) {
+      $this->dtend['params']['TZID'] = $this->dtend['value']['tz'];
+      unset( $this->dtend['value']['tz'] );
+    }
+    elseif( isset( $this->dtend['params']['TZID'] ))
+      unset( $this->dtend['params']['TZID'] );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: DTSTAMP
+ */
+/**
+ * creates formatted output for calendar component property dtstamp
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createDtstamp() {
+    if( !isset( $tis->dtstamp['value']['year'] )  &&
+        !isset( $this->dtstamp['value']['month'] ) &&
+        !isset( $this->dtstamp['value']['day'] )   &&
+        !isset( $this->dtstamp['value']['hour'] )  &&
+        !isset( $this->dtstamp['value']['min'] )   &&
+        !isset( $this->dtstamp['value']['sec'] ))
+      $this->_makeDtstamp();
+    $formatted  = $this->_format_date_time( $this->dtstamp['value'], 7 );
+    $attributes = $this->_createParams( $this->dtstamp['params'] );
+    return $this->_createElement( 'DTSTAMP', $attributes, $formatted );
+  }
+/**
+ * computes datestamp for calendar component object instance dtstamp
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-13
+ * @return void
+ */
+  function _makeDtstamp() {
+    $this->dtstamp['value'] = array( 'year'  => date( 'Y' )
+                                   , 'month' => date( 'm' )
+                                   , 'day'   => date( 'd' )
+                                   , 'hour'  => date( 'H' )
+                                   , 'min'   => date( 'i' )
+                                   , 'sec'   => date( 's' ) - date( 'Z' ));
+    $this->dtstamp['params'] = null;
+  }
+/**
+ * set calendar component property dtstamp
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param mixed $year
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param array $params optional
+ * @return void
+ */
+  function setDtstamp( $year, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $params=FALSE ) {
+    if( is_array( $year ) &&
+      ( array_key_exists( 'year', $year ))) {
+      $this->dtstamp['value']  = $this->_date_time_array( $year, 7 );
+      $this->dtstamp['params'] = $this->_setParams( $month );
+    }
+    elseif( is_array( $year ) && isset( $year['timestamp'] )) {
+      $this->dtstamp['value']  = $this->_date_time_string( date( 'Y-m-d H:i:s', $year['timestamp'] ), 7 );
+      $this->dtstamp['params'] = $this->_setParams( $month );
+    }
+    elseif( 8 <= strlen( trim( $year ))) { // ex. 2006-08-03 10:12:18
+      $this->dtstamp['value']  = $this->_date_time_string( $year, 7 );
+      $this->dtstamp['params'] = $this->_setParams( $month );
+    }
+    else {
+      $this->dtstamp['value']  = array( 'year'  => $year
+                                      , 'month' => $month
+                                      , 'day'   => $day
+                                      , 'hour'  => $hour
+                                      , 'min'   => $min
+                                      , 'sec'   => $sec );
+      $this->dtstamp['params'] = $this->_setParams( $params );
+    }
+    $this->dtstamp['value']['tz']   = 'Z';
+  }
+/*********************************************************************************/
+/**
+ * Property Name: DTSTART
+ */
+/**
+ * creates formatted output for calendar component property dtstart
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @param bool $localtime optional, default FALSE
+ * @return string
+ */
+  function createDtstart( $localtime=FALSE ) {
+    if( !isset( $this->dtstart['value']['year'] )  &&
+        !isset( $this->dtstart['value']['month'] ) &&
+        !isset( $this->dtstart['value']['day'] )   &&
+        !isset( $this->dtstart['value']['hour'] )  &&
+        !isset( $this->dtstart['value']['min'] )   &&
+        !isset( $this->dtstart['value']['sec'] ))
+      return;
+    if( $localtime )
+      unset( $this->dtstart['value']['tz'] );
+    $formatted  = $this->_format_date_time( $this->dtstart['value'] );
+    $attributes = $this->_createParams( $this->dtstart['params'] );
+    return $this->_createElement( 'DTSTART', $attributes, $formatted );
+  }
+/**
+ * set calendar component property dtstart
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-20
+ * @param mixed $year
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param string $tz optional
+ * @param array $params optional
+ * @return void
+ */
+  function setDtstart( $year, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $tz=FALSE, $params=FALSE ) {
+    $parno = null;
+    if( is_array( $year ) && ( in_array( count( $year ), array( 3, 4, 6, 7 )))) {
+      $this->dtstart['params']     = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ));
+      if( isset( $this->dtstart['params']['TZID'] ))
+        $year['tz'] = $this->dtstart['params']['TZID'];
+      $hitval = ( !empty( $year['tz'] ) || !empty( $year[6] ) || ( 4 == count( $year ))) ? 7 : 6;
+      $parno = $this->_existRem( $this->dtstart['params'], 'VALUE', 'DATE-TIME', $hitval );
+      if( !isset( $parno )) $parno = $this->_existRem( $this->dtstart['params'], 'VALUE', 'DATE', 3 );
+      if( !isset( $parno )) $parno = count( $year );
+      $this->dtstart['value']      = $this->_date_time_array( $year, $parno );
+    }
+    elseif( is_array( $year ) && isset( $year['timestamp'] )) {
+      $this->dtstart['params']     = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ) );
+      if( isset( $this->dtstart['params']['TZID'] ))
+        $year['tz'] = $this->dtstart['params']['TZID'];
+      $tz    = ( isset( $year['tz'] )) ? ' '.$year['tz'] : null;
+      $hitval = ( !empty( $tz )) ? 7 : 6;
+      $parno = $this->_existRem( $this->dtstart['params'], 'VALUE', 'DATE-TIME', $hitval );
+      if( !isset( $parno )) $parno = $this->_existRem( $this->dtstart['params'], 'VALUE', 'DATE', 3 );
+      if( !isset( $parno )) $parno = $hitval;
+      $this->dtstart['value']      = $this->_date_time_string( date( 'Y-m-d H:i:s', $year['timestamp'] ).$tz, $parno );
+    }
+    elseif( 8 <= strlen( trim( $year ))) { // ex. 2006-08-03 10:12:18
+      $this->dtstart['params']     = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ) );
+      $parno = $this->_existRem( $this->dtstart['params'], 'VALUE', 'DATE-TIME', 7 );
+      if( !isset( $parno )) $parno = $this->_existRem( $this->dtstart['params'], 'VALUE', 'DATE', 3 );
+      $this->dtstart['value']      = $this->_date_time_string( $year, $parno );
+      if( isset( $this->dtstart['params']['TZID'] ))
+        $this->dtstart['value']['tz'] = $this->dtstart['params']['TZID'];
+    }
+    else {
+      $this->dtstart['params']     = $this->_setParams( $params, array( 'VALUE' => 'DATE-TIME' ) );
+      if( isset( $this->dtstart['params']['TZID'] ))
+        $tz    = $this->dtstart['params']['TZID'];
+      $hitval = ( !empty( $tz )) ? 7 : null;
+      $parno = $this->_existRem( $this->dtstart['params'], 'VALUE', 'DATE-TIME', $hitval );
+      if( !isset( $parno )) $parno = $this->_existRem( $this->dtstart['params'], 'VALUE', 'DATE', 3 );
+      $this->dtstart['value'] = array( 'year'  => $year, 'month' => $month, 'day'   => $day );
+      if( 3 != $parno ) {
+        $this->dtstart['value']['hour'] = ( $hour ) ? $hour : '0';
+        $this->dtstart['value']['min']  = ( $min )  ? $min  : '0';
+        $this->dtstart['value']['sec']  = ( $sec )  ? $sec  : '0';
+        if( !empty( $tz ))
+          $this->dtstart['value']['tz'] = $tz;
+      }
+    }
+    if( 3 == $parno ) {
+      $this->dtstart['params']['VALUE'] = 'DATE';
+      unset( $this->dtstart['value']['tz'] );
+      unset( $this->dtstart['params']['TZID'] );
+    }
+    if( !empty( $this->dtstart['value']['tz'] )   &&
+         ( $this->dtstart['value']['tz'] != 'Z' ) &&
+      ( !( in_array($this->dtstart['value']['tz']{0}, array( '+', '-' )) &&
+           ctype_digit( substr( $this->dtstart['value']['tz'], 1 ))) &&
+        !ctype_digit( $this->dtstart['value']['tz'] ) ) ) {
+      $this->dtstart['params']['TZID'] = $this->dtstart['value']['tz'];
+      unset( $this->dtstart['value']['tz'] );
+    }
+    elseif( isset( $this->dtstart['params']['TZID'] ))
+      unset( $this->dtstart['params']['TZID'] );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: DUE
+ */
+/**
+ * creates formatted output for calendar component property due
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.19 - 2007-03-27
+ * @return string
+ */
+  function createDue() {
+    if( !isset( $this->due['value']['year'] )  &&
+        !isset( $this->due['value']['month'] ) &&
+        !isset( $this->due['value']['day'] )   &&
+        !isset( $this->due['value']['hour'] )  &&
+        !isset( $this->due['value']['min'] )   &&
+        !isset( $this->due['value']['sec'] ))
+      return;
+    $formatted  = $this->_format_date_time( $this->due['value'] );
+    $attributes = $this->_createParams( $this->due['params'] );
+    return $this->_createElement( 'DUE', $attributes, $formatted );
+  }
+/**
+ * set calendar component property due
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-04-29
+ * @param mixed $year
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param array $params optional
+ * @return void
+ */
+  function setDue( $year, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $tz=FALSE, $params=FALSE ) {
+    $parno = null;
+    if( is_array( $year ) && ( in_array( count( $year ), array( 3, 4, 6, 7 )))) {
+      $this->due['params'] = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ) );
+      if( isset( $this->due['params']['TZID'] ))
+        $year['tz'] = $this->due['params']['TZID'];
+      $hitval = ( !empty( $year['tz'] ) || !empty( $year[6] ) || ( 4 == count( $year ))) ? 7 : 6;
+      $parno = $this->_existRem( $this->due['params'], 'VALUE', 'DATE-TIME', $hitval );
+      if( !isset( $parno )) $parno  = $this->_existRem( $this->due['params'], 'VALUE', 'DATE', 3 );
+      if( !isset( $parno )) $parno  = count( $year );
+      $this->due['value'] = $this->_date_time_array( $year, $parno );
+    }
+    elseif( is_array( $year ) && isset( $year['timestamp'] )) {
+      $this->due['params'] = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ) );
+      if( isset( $this->due['params']['TZID'] ))
+        $year['tz'] = $this->due['params']['TZID'];
+      $tz    = ( isset( $year['tz'] )) ? ' '.$year['tz'] : null;
+      $hitval = ( !empty( $tz )) ? 7 : 6;
+      $parno = $this->_existRem( $this->due['params'], 'VALUE', 'DATE-TIME', $hitval );
+      if( !isset( $parno )) $parno  = $this->_existRem( $this->due['params'], 'VALUE', 'DATE', 3 );
+      if( !isset( $parno )) $parno  = $hitval;
+      $this->due['value'] = $this->_date_time_string( date( 'Y-m-d H:i:s', $year['timestamp'] ).$tz, $parno );
+    }
+    elseif( 8 <= strlen( trim( $year ))) { // ex. 2006-08-03 10:12:18
+      $this->due['params'] = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ) );
+      $parno = $this->_existRem( $this->due['params'], 'VALUE', 'DATE-TIME', 7 );
+      if( !isset( $parno )) $parno  = $this->_existRem( $this->due['params'], 'VALUE', 'DATE', 3 );
+      $this->due['value'] = $this->_date_time_string( $year, $parno );
+      if( isset( $this->due['params']['TZID'] ))
+        $this->due['value']['tz'] = $this->due['params']['TZID'];
+    }
+    else {
+      $this->due['params'] = $this->_setParams( $params, array( 'VALUE' => 'DATE-TIME' ) );
+      if( isset( $this->due['params']['TZID'] ))
+        $tz    = $this->due['params']['TZID'];
+      $hitval  = ( !empty( $tz )) ? 7 : null;
+      $parno   = $this->_existRem( $this->due['params'], 'VALUE', 'DATE-TIME', $hitval );
+      if( !isset( $parno )) $parno  = $this->_existRem( $this->due['params'], 'VALUE', 'DATE', 3 );
+      $this->due['value'] = array( 'year'  => $year, 'month' => $month, 'day'   => $day );
+      if( 3 != $parno ) {
+        $this->due['value']['hour'] = ( $hour ) ? $hour : '0';
+        $this->due['value']['min']  = ( $min )  ? $min  : '0';
+        $this->due['value']['sec']  = ( $sec )  ? $sec  : '0';
+        if( !empty( $tz ))
+          $this->due['value']['tz'] = $tz;
+      }
+    }
+    if( 3 == $parno ) {
+      $this->due['params']['VALUE'] = 'DATE';
+      unset( $this->due['value']['tz'] );
+      unset( $this->due['params']['TZID'] );
+    }
+    if( !empty( $this->due['value']['tz'] )   &&
+         ( $this->due['value']['tz'] != 'Z' ) &&
+      ( !( in_array($this->due['value']['tz']{0}, array( '+', '-' )) &&
+           ctype_digit( substr( $this->due['value']['tz'], 1 ))) &&
+        !ctype_digit( $this->due['value']['tz'] ) ) ) {
+      $this->due['params']['TZID'] = $this->due['value']['tz'];
+      unset( $this->due['value']['tz'] );
+    }
+    elseif( isset( $this->due['params']['TZID'] ))
+      unset( $this->due['params']['TZID'] );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: DURATION
+ */
+/**
+ * creates formatted output for calendar component property duration
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createDuration() {
+    if( !isset( $this->duration['value']['week'] ) &&
+        !isset( $this->duration['value']['day'] )  &&
+        !isset( $this->duration['value']['hour'] ) &&
+        !isset( $this->duration['value']['min'] )  &&
+        !isset( $this->duration['value']['sec'] ))
+      return;
+    $attributes = $this->_createParams( $this->duration['params'] );
+    return $this->_createElement( 'DURATION', $attributes, $this->_format_duration( $this->duration['value'] ));
+  }
+/**
+ * set calendar component property duration
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param mixed $week
+ * @param mixed $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param array $params optional
+ * @return void
+ */
+  function setDuration( $week=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $params=FALSE ) {
+    if( is_array( $week ))  {
+      $this->duration['value']  = $this->_duration_array( $week );
+      $this->duration['params'] = $this->_setParams( $day );
+    }
+    elseif( is_string( $week ) && ( 3 <= strlen( trim( $week )))) {
+      if( in_array( substr( $week,0, 1 ), array( '+', '-' )))
+        $week = substr( $week, 1 );
+      $this->duration['value']  = $this->_duration_string( $week );
+      $this->duration['params'] = $this->_setParams( $day );
+    }
+    else {
+      $this->duration['value']  = $this->_duration_array( array( $week, $day, $hour, $min, $sec ));
+      $this->duration['params'] = $this->_setParams( $params );
+    }
+  }
+/*********************************************************************************/
+/**
+ * Property Name: EXDATE
+ */
+/**
+ * creates formatted output for calendar component property exdate
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createExdate() {
+    $cnt = count( $this->exdate );
+    if( 0 >= $cnt )
+      return;
+    $output = null;
+    foreach( $this->exdate as $theExdate ) {
+      $content = $attributes = null;
+      foreach( $theExdate['value'] as $eix => $exdatePart ) {
+        $formatted = $this->_format_date_time( $exdatePart );
+        if( isset( $theExdate['params']['TZID'] ))
+          $formatted = str_replace( 'Z', '', $formatted);
+        if( 0 < $eix ) {
+          if( isset( $theExdate['value'][0]['tz'] ) &&
+            ( ctype_digit( substr( $theExdate['value'][0]['tz'], -4 )) ||
+                ( 'Z' == $theExdate['value'][0]['tz'] ))) {
+            if( 'Z' != substr( $formatted, -1 ))
+              $formatted .= 'Z';
+          }
+          else
+            $formatted = str_replace( 'Z', '', $formatted );
+        }
+        if( 0 < $eix )
+          $content .= ',';
+        $content .= $formatted;
+      }
+      $attributes .= $this->_createParams( $theExdate['params'] );
+      $output .= $this->_createElement( 'EXDATE', $attributes, $content );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property exdate
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-20
+ * @param array exdates
+ * @param array $params optional
+ * @return void
+ */
+  function setExdate( $exdates, $params=FALSE ) {
+    $exdate = array();
+    $exdate['params'] = $this->_setParams( $params, array( 'VALUE' => 'DATE-TIME' ) );
+    $parno  = ( isset( $exdate['params']['TZID'] )) ? 6 : null;
+    $parno  = $this->_existRem( $exdate['params'], 'VALUE', 'DATE-TIME', 7, $parno );
+    if( !isset( $parno )) $parno = $this->_existRem( $exdate['params'], 'VALUE', 'DATE', 3 );
+    foreach( $exdates as $eix => $theExdate ) {
+      if(  is_array( $theExdate ) &&
+         ( in_array( count( $theExdate ), array( 3, 4, 6, 7 )))) {
+        if( isset( $exdate['params']['TZID'] ))
+          $theExdate['tz'] = $exdate['params']['TZID'];
+        if( !isset( $parno )) {
+          if( 4 < count( $theExdate ))
+            $parno = 7;
+          else
+            $parno = 3;
+        }
+        $exdatea = $this->_date_time_array( $theExdate, $parno );
+      }
+      elseif( is_array( $theExdate ) && isset( $theExdate['timestamp'] )) {
+        if( isset( $exdate['params']['TZID'] ))
+          $theExdate['tz'] = $exdate['params']['TZID'];
+        $tz    = ( isset( $theExdate['tz'] )) ? ' '.$theExdate['tz'] : null;
+        if( !isset( $parno ))
+          $parno = ( !empty( $tz )) ? 7 : 6;
+        $exdatea = $this->_date_time_string( date( 'Y-m-d H:i:s', $theExdate['timestamp'] ).$tz, $parno );
+      }
+      elseif( 8 <= strlen( trim( $theExdate ))) { // ex. 2006-08-03 10:12:18
+        $exdatea = $this->_date_time_string( $theExdate, $parno );
+        if( isset( $exdate['params']['TZID'] ))
+          $exdatea['tz'] = $exdate['params']['TZID'];
+      }
+      if( !isset( $parno )) {
+        $parno = count( $exdatea );
+        if( 6 == $parno )
+          $parno = 7;
+      }
+      $exdate['value'][] = $exdatea;
+    }
+    if( 0 < count( $exdate['value'] )) {
+      if( 3 == $parno ) {
+        $exdate['params']['VALUE'] = 'DATE';
+        foreach( $exdate['value'] as $eix => $exdatea )
+          unset( $exdate['value'][$eix]['tz'] );
+        unset( $exdate['params']['TZID'] );
+      }
+      if( !empty( $exdate['value'][0]['tz'] )   &&
+           ( $exdate['value'][0]['tz'] != 'Z' ) &&
+        ( !( in_array($exdate['value'][0]['tz']{0}, array( '+', '-' )) &&
+             ctype_digit( substr( $exdate['value'][0]['tz'], 1 ))) &&
+          !ctype_digit( $exdate['value'][0]['tz'] ) ) ) {
+        $exdate['params']['TZID'] = $exdate['value'][0]['tz'];
+        foreach( $exdate['value'] as $exix => $exdatea ) {
+          if( !empty( $exdate['value'][0]['tz'] )   &&
+               ( $exdate['value'][0]['tz'] != 'Z' ) &&
+            ( !( in_array($exdate['value'][0]['tz']{0}, array( '+', '-' )) &&
+                 ctype_digit( substr( $exdate['value'][0]['tz'], 1 ))) &&
+              !ctype_digit( $exdate['value'][0]['tz'] ) ) )
+            unset( $exdate['value'][$exix]['tz'] );
+        }
+      }
+      elseif( isset( $exdate['params']['TZID'] ))
+        unset( $exdate['params']['TZID'] );
+      $this->exdate[] = $exdate;
+    }
+  }
+/*********************************************************************************/
+/**
+ * Property Name: EXRULE
+ */
+/**
+ * creates formatted output for calendar component property exrule
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.7.28 - 2006-09-13
+ * @return string
+ */
+  function createExrule() {
+    $cnt = count( $this->exrule );
+    if( 0 >= $cnt )
+      return;
+    $exrule = 'EXRULE';
+    return $this->_format_recur( $exrule, $this->exrule );
+  }
+/**
+ * set calendar component property exdate
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param array $exruleset
+ * @param array $params optional
+ * @return void
+ */
+  function setExrule( $exruleset, $params=FALSE ) {
+    $exrule = array();
+    foreach( $exruleset as $exrulelabel => $exrulevalue ) {
+      $exrulelabel = strtoupper( $exrulelabel );
+      if( 'UNTIL'  != $exrulelabel )
+        $exrule['value'][$exrulelabel] = $exrulevalue;
+      elseif( is_array( $exrulevalue ) &&
+            (( 3 == count( $exrulevalue )) ||
+             ( 6 == count( $exrulevalue )) ||
+             ( 7 == count( $exrulevalue )) ||
+             ( array_key_exists( 'year', $exrulevalue )))) {
+        $parno = ( 3 < count( $exrulevalue )) ? 7 : 3 ;
+        $date  = $this->_date_time_array( $exrulevalue, $parno );
+        if(( 3 < count( $date )) && !isset( $date['tz'] ))
+          $date['tz'] = 'Z';
+        $exrule['value'][$exrulelabel] = $date;
+      }
+      elseif( is_array( $exrulevalue ) && isset( $exrulevalue['timestamp'] )) {
+        $date  = $this->_date_time_string( date( 'Y-m-d H:i:s', $exrulevalue['timestamp'] ), 6 );
+        $date['tz'] = 'Z';
+        $exrule['value'][$exrulelabel] = $date;
+      }
+      elseif( 8 <= strlen( trim( $exrulevalue ))) { // ex. 2006-08-03 10:12:18
+        $date = $this->_date_time_string( $exrulevalue );
+        if(( 3 < count( $date )) && !isset( $date['tz'] ))
+          $date['tz'] = 'Z';
+        $exrule['value'][$exrulelabel] = $date;
+      }
+    }
+    $exrule['params'] = $this->_setParams( $params );
+    $this->exrule[] = $exrule;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: FREEBUSY
+ */
+/**
+ * creates formatted output for calendar component property freebusy
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-16
+ * @return string
+ */
+  function createFreebusy() {
+    $cnt = count( $this->freebusy );
+    if( 0 >= $cnt )
+      return;
+    $output = null;
+    foreach( $this->freebusy as $freebusyPart ) {
+      $attributes = $content = null;
+      if( isset( $freebusyPart['value']['fbtype'] )) {
+        $attributes .= $this->intAttrDelimiter.'FBTYPE='.$freebusyPart['value']['fbtype'];
+        unset( $freebusyPart['value']['fbtype'] );
+        $freebusyPart['value'] = array_values( $freebusyPart['value'] );
+      }
+      else
+        $attributes .= $this->intAttrDelimiter.'FBTYPE=BUSY';
+      $attributes .= $this->_createParams( $freebusyPart['params'] );
+      $fno = 1;
+      $cnt = count( $freebusyPart['value']);
+      foreach( $freebusyPart['value'] as $periodix => $freebusyPeriod ) {
+        $formatted   = $this->_format_date_time( $freebusyPeriod[0] );
+        $content .= $formatted;
+        $content .= '/';
+        $cnt2 = count( $freebusyPeriod[1]);
+        if( array_key_exists( 'year', $freebusyPeriod[1] ))      // date-time
+          $cnt2 = 7;
+        elseif( array_key_exists( 'week', $freebusyPeriod[1] ))  // duration
+          $cnt2 = 5;
+        if(( 7 == $cnt2 )   &&    // period=  -> date-time
+            isset( $freebusyPeriod[1]['year'] )  &&
+            isset( $freebusyPeriod[1]['month'] ) &&
+            isset( $freebusyPeriod[1]['day'] )) {
+          $content .= $this->_format_date_time( $freebusyPeriod[1] );
+        }
+        else {                                  // period=  -> dur-time
+          $content .= $this->_format_duration( $freebusyPeriod[1] );
+        }
+        if( $fno < $cnt )
+          $content .= ',';
+        $fno++;
+      }
+      $output .= $this->_createElement( 'FREEBUSY', $attributes, $content );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property freebusy
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param string $fbType
+ * @param array $fbValues
+ * @param array $params optional
+ * @return void
+ */
+  function setFreebusy( $fbType, $fbValues, $params=FALSE ) {
+    $fbType = strtoupper( $fbType );
+    if(( !in_array( $fbType, array( 'FREE', 'BUSY', 'BUSY-UNAVAILABLE', 'BUSY-TENTATIVE' ))) &&
+       ( 'X-' != substr( $fbType, 0, 2 )))
+      $fbType = 'BUSY';
+    $freebusy['value'] = array( 'fbtype' => $fbType );
+    foreach( $fbValues as $fbPeriod ) {   // periods => period
+      $freebusyPeriod = array();
+      foreach( $fbPeriod as $fbMember ) { // pairs => singlepart
+        $freebusyPairMember = array();
+        if( is_array( $fbMember )) {
+          $cnt = count( $fbMember );
+          if(( 6 == $cnt ) || ( 7 == $cnt ) || ( array_key_exists( 'year', $fbMember ))) { // date-time value
+            $date = $this->_date_time_array( $fbMember, 7 );
+            $date['tz'] = ( !isset( $date['tz'] )) ? 'Z' : $date['tz'];
+            $freebusyPairMember = $date;
+          }
+          elseif( array_key_exists( 'timestamp', $fbMember )) { // timestamp value
+            $tz    = ( isset( $fbMember['tz'] )) ? ' '.$fbMember['tz'] : null;
+            $parno = ( !empty( $tz )) ? 7 : 6;
+            $date  = $this->_date_time_string( date( 'Y-m-d H:i:s', $fbMember['timestamp'] ).$tz, $parno );
+            $date['tz'] = ( !isset( $date['tz'] )) ? 'Z' : $date['tz'];
+            $freebusyPairMember = $date;
+          }
+          else {                                         // array format duration
+            $freebusyPairMember = $this->_duration_array( $fbMember );
+          }
+        }
+        elseif(( 3 <= strlen( trim( $fbMember ))) &&    // string format duration
+               ( in_array( $fbMember{0}, array( 'P', '+', '-' )))) {
+          if( 'P' != $fbMember{0} )
+            $fbmember = substr( $fbMember, 1 );
+          $freebusyPairMember = $this->_duration_string( $fbMember );
+        }
+        elseif( 8 <= strlen( trim( $fbMember ))) { // ex. 2006-08-03 10:12:18
+          $date = $this->_date_time_string( $fbMember, 7 );
+          $date['tz'] = ( !isset( $date['tz'] )) ? 'Z' : $date['tz'];
+          $freebusyPairMember = $date;
+        }
+        $freebusyPeriod[]  = $freebusyPairMember;
+      }
+      $freebusy['value'][] = $freebusyPeriod;
+    }
+    $freebusy['params']    = $this->_setParams( $params );
+    $this->freebusy[]      = $freebusy;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: GEO
+ */
+/**
+ * creates formatted output for calendar component property geo
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createGeo() {
+    $cnt = count( $this->geo );
+    if( 0 >= $cnt )
+      return;
+    $attributes = $this->_createParams( $this->geo['params'] );
+    $content    = null;
+    $content   .= number_format( (float) $this->geo['value']['latitude'], 6, '.', '');
+    $content   .= ';';
+    $content   .= number_format( (float) $this->geo['value']['longitude'], 6, '.', '');
+    return $this->_createElement( 'GEO', $attributes, $content );
+  }
+/**
+ * set calendar component property geo
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param float $latitude
+ * @param float $longitude
+ * @param array $params optional
+ * @return void
+ */
+  function setGeo( $latitude, $longitude, $params=FALSE ) {
+    $this->geo['value']['latitude']  = $latitude;
+    $this->geo['value']['longitude'] = $longitude;
+    $this->geo['params'] = $this->_setParams( $params );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: LAST-MODIFIED
+ */
+/**
+ * creates formatted output for calendar component property last-modified
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createLastModified() {
+    if( !isset( $this->lastmodified['value']['year'] )  &&
+        !isset( $this->lastmodified['value']['month'] ) &&
+        !isset( $this->lastmodified['value']['day'] )   &&
+        !isset( $this->lastmodified['value']['hour'] )  &&
+        !isset( $this->lastmodified['value']['min'] )   &&
+        !isset( $this->lastmodified['value']['sec'] ))
+      return;
+    $attributes = $this->_createParams( $this->lastmodified['params'] );
+    $formatted  = $this->_format_date_time( $this->lastmodified['value'], 7 );
+    return $this->_createElement( 'LAST-MODIFIED', $attributes, $formatted );
+  }
+/**
+ * set calendar component property completed
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-13
+ * @param mixed $year optional
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param array $params optional
+ * @return void
+ */
+  function setLastModified( $year=FALSE, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $params=FALSE ) {
+    if( !isset( $year )) {
+      $year = date('Ymd\THis', mktime ( date( 'H' ), date( 'i' ), date( 's' ) - date( 'Z'), date( 'm' ), date( 'd' ), date( 'Y' )));
+    }
+    if( is_array( $year ) &&
+      (( 6 == count( $year )) || ( isset( $year['year'] )))) {
+      $this->lastmodified['value']  = $this->_date_time_array( $year, 7 );
+      $this->lastmodified['params'] = $this->_setParams( $month );
+    }
+    elseif( is_array( $year ) && isset( $year['timestamp'] )) {
+      $this->lastmodified['value']  =
+        $this->_date_time_string( date( 'Y-m-d H:i:s', $year['timestamp'] ), 7 );
+      $this->lastmodified['params'] = $this->_setParams( $month );
+    }
+    elseif( 8 <= strlen( trim( $year ))) { // ex. 2006-08-03 10:12:18
+      $this->lastmodified['value']  = $this->_date_time_string( $year, 7 );
+      $this->lastmodified['params'] = $this->_setParams( $month );
+    }
+    else {
+      $this->lastmodified['value']  = array( 'year'  => $year
+                                           , 'month' => $month
+                                           , 'day'   => $day
+                                           , 'hour'  => $hour
+                                           , 'min'   => $min
+                                           , 'sec'   => $sec
+                                           , 'tz'    => 'Z');
+      $this->lastmodified['params'] = $this->_setParams( $params );
+    }
+    if( isset( $this->lastmodified['value']['year'] ) &&
+       !isset( $this->lastmodified['value']['tz'] ))
+      $this->lastmodified['value']['tz']  = 'Z';
+  }
+/*********************************************************************************/
+/**
+ * Property Name: LOCATION
+ */
+/**
+ * creates formatted output for calendar component property location
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createLocation() {
+    $cnt = count( $this->location );
+    if( 0 >= $cnt )
+      return;
+    $attributes = $this->_createParams( $this->location['params'], array( 'ALTREP', 'LANGUAGE' ));
+    $content    = $this->_strrep( $this->location['value'] );
+    return $this->_createElement( 'LOCATION', $attributes, $content );
+  }
+/**
+ * set calendar component property location
+ '
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param string $value
+ * @param array params optional
+ * @return void
+ */
+  function setLocation( $value, $params=FALSE ) {
+    $this->location['value']  = $value;
+    $this->location['params'] = $this->_setParams( $params );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: ORGANIZER
+ */
+/**
+ * creates formatted output for calendar component property organizer
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createOrganizer() {
+    $cnt = count( $this->organizer );
+    if( 0 >= $cnt )
+      return;
+    $attributes = $this->_createParams( $this->organizer['params']
+                                      , array( 'CN', 'DIR', 'LANGUAGE', 'SENT-BY' ));
+    $content    = 'MAILTO:'.$this->organizer['value'];
+    return $this->_createElement( 'ORGANIZER', $attributes, $content );
+  }
+/**
+ * set calendar component property organizer
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.19 - 2007-04-02
+ * @param string $value
+ * @param array params optional
+ * @return void
+ */
+  function setOrganizer( $value, $params=FALSE ) {
+    $this->organizer['value']  = str_replace( 'MAILTO:', '', $value );
+    $this->organizer['params'] = $this->_setParams( $params );
+    if( isset($this->organizer['params']['SENT-BY'] )) {
+      if( 'MAILTO' == strtoupper( substr( $this->organizer['params']['SENT-BY'], 0, 6 )))
+        $this->organizer['params']['SENT-BY'] = substr( $this->organizer['params']['SENT-BY'], 7 );
+    }
+  }
+/*********************************************************************************/
+/**
+ * Property Name: PERCENT-COMPLETE
+ */
+/**
+ * creates formatted output for calendar component property percent-complete
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createPercentComplete() {
+    $cnt = count( $this->percentcomplete );
+    if( 0 >= $cnt )
+      return;
+    $attributes = $this->_createParams( $this->percentcomplete['params'] );
+    return $this->_createElement( 'PERCENT-COMPLETE', $attributes, $this->percentcomplete['value'] );
+  }
+/**
+ * set calendar component property percent-complete
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param int $value
+ * @param array $params optional
+ * @return void
+ */
+  function setPercentComplete( $value, $params=FALSE ) {
+    $this->percentcomplete['value']  = $value;
+    $this->percentcomplete['params'] = $this->_setParams( $params );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: PRIORITY
+ */
+/**
+ * creates formatted output for calendar component property priority
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createPriority() {
+    $cnt = count( $this->priority );
+    if( 0 >= $cnt )
+      return;
+    $attributes = $this->_createParams( $this->priority['params'] );
+    return $this->_createElement( 'PRIORITY', $attributes, $this->priority['value'] );
+  }
+/**
+ * set calendar component property priority
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param int $value
+ * @param array $params optional
+ * @return void
+ */
+  function setPriority( $value, $params=FALSE  ) {
+    $this->priority['value']  = $value;
+    $this->priority['params'] = $this->_setParams( $params );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: RDATE
+ */
+/**
+ * creates formatted output for calendar component property rdate
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-13
+ * @param bool $localtime optional, default FALSE
+ * @return string
+ */
+  function createRdate( $localtime=FALSE ) {
+    $cnt = count( $this->rdate );
+    if( 0 >= $cnt )
+      return;
+    $output = null;
+    foreach( $this->rdate as $theRdate ) {
+      $attributes = $this->_createParams( $theRdate['params'] );
+      $cnt = count( $theRdate['value'] );
+      $content = null;
+      $rno = 1;
+      foreach( $theRdate['value'] as $rpix =>$rdatePart ) {
+        $contentPart = null;
+        if( is_array( $rdatePart ) &&
+           ( 2 == count( $rdatePart )) &&
+             array_key_exists( '0', $rdatePart ) &&
+             array_key_exists( '1', $rdatePart )) { // PERIOD
+          if( $localtime  )
+            unset( $rdatePart[0]['tz'] );
+          $formatted = $this->_format_date_time( $rdatePart[0]);
+          if( isset( $theRdate['params']['TZID'] ))
+            $formatted = str_replace( 'Z', '', $formatted);
+          if( 0 < $rpix ) {
+            if( isset( $rdatePart[0]['tz'] ) &&
+               ( ctype_digit( substr( $rdatePart[0]['tz'], -4 )) ||
+                  ( 'Z' == $rdatePart[0]['tz'] ))) {
+              if( 'Z' != substr( $formatted, -1 ))
+                $formatted .= 'Z';
+            }
+            else
+              $formatted = str_replace( 'Z', '', $formatted );
+          }
+          $contentPart .= $formatted;
+          if( 1 == $rno )
+            $attributes .= $this->intAttrDelimiter.'VALUE=PERIOD';
+          $contentPart .= '/';
+          $cnt2 = count( $rdatePart[1]);
+          if( array_key_exists( 'year', $rdatePart[1] )) {
+            if( array_key_exists( 'hour', $rdatePart[1] ))
+              $cnt2 = 7;                                      // date-time
+            else
+              $cnt2 = 3;                                      // date
+          }
+          elseif( array_key_exists( 'week', $rdatePart[1] ))  // duration
+            $cnt2 = 5;
+          if(( 7 == $cnt2 )   &&    // period=  -> date-time
+              isset( $rdatePart[1]['year'] )  &&
+              isset( $rdatePart[1]['month'] ) &&
+              isset( $rdatePart[1]['day'] )) {
+            if( $localtime  )
+              unset( $rdatePart[1]['tz'] );
+            $formatted = $this->_format_date_time( $rdatePart[1] );
+            if( isset( $theRdate['params']['TZID'] ))
+              $formatted = str_replace( 'Z', '', $formatted);
+            if( isset( $rdatePart[0]['tz'] ) &&
+              ( ctype_digit( substr( $rdatePart[0]['tz'], -4 )) ||
+                  ( 'Z' == $rdatePart[0]['tz'] ))) {
+              if( 'Z' != substr( $formatted, -1 ))
+                $formatted .= 'Z';
+            }
+            else
+              $formatted = str_replace( 'Z', '', $formatted );
+           $contentPart .= $formatted;
+          }
+          else {                                  // period=  -> dur-time
+            $contentPart .= $this->_format_duration( $rdatePart[1] );
+          }
+        } // PERIOD end
+        else { // single date start
+          if( $localtime  )
+            unset( $rdatePart['tz'] );
+          $formatted = $this->_format_date_time( $rdatePart);
+          if( isset( $theRdate['params']['TZID'] ))
+            $formatted = str_replace( 'Z', '', $formatted);
+          if( 0 < $rpix ) {
+            $firstPart = ( 2 == count( $theRdate['value'][0] ))
+                       ? $theRdate['value'][0][0] : $theRdate['value'][0];
+            if( isset( $firstPart['tz'] ) &&
+               ( ctype_digit( substr( $firstPart['tz'], -4 )) ||
+                  ( 'Z' == $firstPart['tz'] ))) {
+              if( 'Z' != substr( $formatted, -1 ))
+                $formatted .= 'Z';
+            }
+            else
+              $formatted = str_replace( 'Z', '', $formatted );
+          }
+          $contentPart .= $formatted;
+        }
+        $content .= $contentPart;
+        if( $rno < $cnt )
+          $content .= ',';
+        $rno++;
+      }
+      $output    .= $this->_createElement( 'RDATE', $attributes, $content );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property rdate
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param array $rdates
+ * @param array $params optional
+ * @return void
+ */
+  function setRdate( $rdates, $params=FALSE ) {
+    $input = array();
+    $input['params'] = $this->_setParams( $params, array( 'VALUE' => 'DATE-TIME' ));
+    $this->_existRem( $input['params'], 'VALUE', 'PERIOD' );
+    $parno = ( isset( $input['params']['TZID'] )) ? 6 : null;
+    $parno = ( !$parno ) ? $this->_existRem( $input['params'], 'VALUE', 'DATE-TIME', 7 ) : null;
+    $parno = ( !$parno ) ? $this->_existRem( $input['params'], 'VALUE', 'DATE', 3 ) : 6;
+    foreach( $rdates as $theRdate ) {
+ //   echo 'setRdate in '; print_r ( $theRdate ); echo "<br />\n"; // test ##
+      $inputa = null;
+      if( is_array( $theRdate )) {
+        if(( 2 == count( $theRdate )) &&
+             array_key_exists( '0', $theRdate ) &&
+             array_key_exists( '1', $theRdate ) &&
+            !array_key_exists( 'timestamp', $theRdate )) { // PERIOD
+          foreach( $theRdate as $rix => $rPeriod ) {
+  //  echo 'setRdate i2 '; print_r ( $rPeriod ); echo "<br />\n"; // test ##
+            if( is_array( $rPeriod )) {
+              if (( 1 == count( $rPeriod )) &&
+                  ( 8 <= strlen( trim( $rPeriod[0] )))) { // text-date
+                $inputab       = $this->_date_time_string( $rPeriod[0], $parno );
+                $inputab['tz'] = ( isset( $input['params']['TZID'] )) ? $input['params']['TZID'] :
+                                 ( isset( $inputab['tz'] )) ? $inputab['tz'] : null;
+                $parno         = ( !isset( $parno )) ? count( $inputab ) : $parno;
+                if(( 7 == $parno ) && !isset( $inputab['tz'] ))
+                  $inputab['tz'] = 'Z';
+                $inputa[] = $inputab;
+              }
+              elseif (((3 == count( $rPeriod )) && ( $rix < 1 )) ||
+                      ( 6 == count( $rPeriod )) ||
+                      ( 7 == count( $rPeriod )) ||
+                      ( array_key_exists( 'year', $rPeriod ))) { // date[-time] (only 1st rperiod)
+                if( !isset( $parno ) && 3 < count( $rPeriod ))
+                  $parno = 7;
+                $inputab       = $this->_date_time_array( $rPeriod, $parno );
+                $inputab['tz'] = ( isset( $input['params']['TZID'] )) ? $input['params']['TZID'] :
+                                 ( isset( $inputab['tz'] )) ? $inputab['tz'] : null;
+                $parno         = ( !isset( $parno )) ? count( $inputab ) : $parno;
+                if(( 7 == $parno ) && !isset( $inputab['tz'] ))
+                  $inputab['tz'] = 'Z';
+                $inputa[] = $inputab;
+              }
+              elseif( isset( $rPeriod['timestamp'] )) {   // timestamp
+                $tz    = ( isset( $rPeriod['tz'] ))           ? ' '.$rPeriod['tz']           : null;
+                $tz    = ( isset( $input['params']['TZID'] )) ? ' '.$input['params']['TZID'] : $tz;
+                if( !isset( $parno )) $parno = ( !empty( $tz )) ? 7 : 6;
+                $inputab = $this->_date_time_string( date( 'Y-m-d H:i:s', $rPeriod['timestamp'] ).$tz, $parno );
+                if(( 7 == $parno ) && !isset( $inputab['tz'] ))
+                  $inputab['tz'] = 'Z';
+                $inputa[] = $inputab;
+              }
+              else {                                       // array format duration
+                $inputa[] = $this->_duration_array( $rPeriod );
+              }
+            }
+            elseif(( 3 <= strlen( trim( $rPeriod ))) &&    // string format duration
+                   ( in_array( $rPeriod{0}, array( 'P', '+', '-' )))) {
+              if( 'P' != $rPeriod{0} )
+                $rPeriod = substr( $rPeriod, 1 );
+              $inputa[] = $this->_duration_string( $rPeriod );
+            }
+            elseif( 8 <= strlen( trim( $rPeriod ))) { // ex. 2006-08-03 10:12:18
+              $inputab       = $this->_date_time_string( $rPeriod, $parno );
+              $inputab['tz'] = ( isset( $input['params']['TZID'] ))
+                             ? $input['params']['TZID'] :
+                               ( isset( $inputab['tz'] )) ? $inputab['tz'] : null;
+              $inputa[]      = $inputab;
+              $parno         = ( !isset( $parno )) ? count( $inputab ) : $parno;
+            }
+          }
+        }
+        elseif ( array_key_exists( 'timestamp', $theRdate )) {   // timestamp
+          $tz    = ( isset( $theRdate['tz'] ))          ? ' '.$theRdate['tz']          : null;
+          $tz    = ( isset( $input['params']['TZID'] )) ? ' '.$input['params']['TZID'] : $tz;
+          if( !isset( $parno )) $parno = ( !empty( $tz )) ? 7 : 6;
+          $inputab = $this->_date_time_string( date( 'Y-m-d H:i:s', $theRdate['timestamp'] ).$tz, $parno );
+          if(( 7 == $parno ) && !isset( $inputab['tz'] ))
+            $inputab['tz'] = 'Z';
+          $inputa = $inputab;
+        }
+        elseif (( in_array( count( $theRdate ), array( 3, 4, 6, 7 ))) ||
+                ( array_key_exists( 'year', $theRdate ))) {  // date[-time]
+          if( isset( $input['params']['TZID'] ))
+            $theRdate['tz'] = $input['params']['TZID'];
+          elseif( !isset( $theRdate['tz'] )) {
+            if(( 7 == count( $theRdate )) && isset( $theRdate[6] )) {
+              $theRdate['tz'] = $theRdate[6];
+              unset( $theRdate[6] );
+            }
+            elseif(( 4 == count( $theRdate )) && isset( $theRdate[3] )) {
+              $theRdate['tz'] = $theRdate[3];
+              unset( $theRdate[3] );
+            }
+          }
+          if( !isset( $parno ) && 3 < count( $theRdate ))
+            $parno = ( isset( $theRdate['tz'] )) ? 7 : count( $theRdate );
+          elseif( !isset( $parno ))
+            $parno = 3;
+          $inputa = $this->_date_time_array( $theRdate, $parno );
+          if(( 7 == $parno ) && !isset( $inputa['tz'] ))
+            $inputa['tz'] = 'Z';
+        }
+      }
+      elseif( 8 <= strlen( trim( $theRdate ))) { // ex. 2006-08-03 10:12:18
+        $inputa       = $this->_date_time_string( $theRdate, $parno );
+        $inpute['tz'] = ( isset( $input['params']['TZID'] )) ? $input['params']['TZID'] :
+                        ( isset( $inpute['tz'] )) ? $inpute['tz'] : null;
+        $parno = ( !isset( $parno )) ? count( $inputa ) : $parno;
+        if(( 7 == $parno ) && !isset( $inputa['tz'] ))
+          $inputa['tz'] = 'Z';
+      }
+      $input['value'][] = $inputa;
+    }
+    if( 0 < count( $input['value'] )) {
+      if( 3 == $parno ) {
+        $input['params']['VALUE'] = 'DATE';
+        foreach( $input['value'] as $eix => $inputa )
+          unset( $input['value'][$eix]['tz'] );
+        unset( $input['params']['TZID'] );
+      }
+      if( !empty( $input['value'][0]['tz'] )   &&
+           ( $input['value'][0]['tz'] != 'Z' ) &&
+        ( !( in_array($input['value'][0]['tz']{0}, array( '+', '-' )) &&
+             ctype_digit( substr( $input['value'][0]['tz'], 1 ))) &&
+          !ctype_digit( $input['value'][0]['tz'] ) ) ) {
+        $input['params']['TZID'] = $input['value'][0]['tz'];
+        foreach( $input['value'] as $eix => $inputa ) {
+          if( !empty( $input['value'][0]['tz'] )   &&
+               ( $input['value'][0]['tz'] != 'Z' ) &&
+            ( !( in_array( $input['value'][0]['tz']{0}, array( '+', '-' )) &&
+                 ctype_digit( substr( $input['value'][0]['tz'], 1 ))) &&
+              !ctype_digit( $input['value'][0]['tz'] ) ) )
+            unset( $input['value'][$eix]['tz'] );
+        }
+      }
+      elseif( isset( $input['params']['TZID'] ))
+        unset( $input['params']['TZID'] );
+
+     $this->rdate[] = $input;
+    }
+   //  echo 'setRdate ut '; print_r ( $this->rdate ); echo "<br />\n"; // test ##
+  }
+/*********************************************************************************/
+/**
+ * Property Name: RECURRENCE-ID
+ */
+/**
+ * creates formatted output for calendar component property recurrence-id
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-26
+ * @return string
+ */
+  function createRecurrenceid() {
+    $cnt = count( $this->recurrenceid );
+    if( 0 >= $cnt )
+      return;
+    $formatted  = $this->_format_date_time( $this->recurrenceid['value'] );
+    $attributes = $this->_createParams( $this->recurrenceid['params'] );
+    return $this->_createElement( 'RECURRENCE-ID', $attributes, $formatted );
+  }
+/**
+ * set calendar component property recurrence-id
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-26
+ * @param mixed $year
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param array $params optional
+ * @return void
+ */
+  function setRecurrenceid( $year, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $tz=FALSE, $params=FALSE ) {
+    $parno = 0;
+    if( is_array( $year ) && ( in_array( count( $year ), array( 3, 4, 6, 7 )))) {
+      $this->recurrenceid['params'] = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ));
+      if( isset( $this->recurrenceid['params']['TZID'] ))
+        $year['tz'] = $this->recurrenceid['params']['TZID'];
+      $hitval = ( !empty( $year['tz'] ) || !empty( $year[6] ) || ( 4 == count( $year ))) ? 7 : 6;
+      $parno = $this->_existRem( $this->recurrenceid['params'], 'VALUE', 'DATE-TIME', $hitval );
+      if( !isset( $parno )) $parno  = $this->_existRem( $this->recurrenceid['params'], 'VALUE', 'DATE', 3 );
+      if( !isset( $parno )) $parno  = count( $year );
+      $this->recurrenceid['value']  = $this->_date_time_array( $year, $parno );
+    }
+    elseif( is_array( $year ) && isset( $year['timestamp'] )) {
+      $this->recurrenceid['params'] = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ));
+      $tz    = ( isset( $year['tz'] )) ? ' '.$year['tz'] : null;
+      $tz    = ( isset( $this->recurrenceid['params']['TZID'] ))
+                  ? ' '.$this->recurrenceid['params']['TZID'] : $tz;
+      $hitval = ( !empty( $tz )) ? 7 : 6;
+      $parno = $this->_existRem( $this->recurrenceid['params'], 'VALUE', 'DATE-TIME', $hitval );
+      if( !isset( $parno )) $parno  = $this->_existRem( $this->recurrenceid['params'], 'VALUE', 'DATE', 3 );
+      if( !isset( $parno )) $parno  = $hitval;
+      $this->recurrenceid['value']  = $this->_date_time_string( date( 'Y-m-d H:i:s', $year['timestamp'] ).$tz, $parno );
+    }
+    elseif( 8 <= strlen( trim( $year ))) { // ex. 2006-08-03 10:12:18
+      $this->recurrenceid['params'] = $this->_setParams( $month, array( 'VALUE' => 'DATE-TIME' ));
+      $parno = $this->_existRem( $this->recurrenceid['params'], 'VALUE', 'DATE-TIME', 7 );
+      if( !isset( $parno )) $parno  = $this->_existRem( $this->recurrenceid['params'], 'VALUE', 'DATE', 3 );
+      $this->recurrenceid['value']  = $this->_date_time_string( $year, $parno );
+      if( isset( $this->recurrenceid['params']['TZID'] ))
+        $this->recurrenceid['value']['tz'] = $this->recurrenceid['params']['TZID'];
+    }
+    else {
+      $this->recurrenceid['params'] = $this->_setParams( $params, array( 'VALUE' => 'DATE-TIME' ));
+      $tz     = ( isset( $this->recurrenceid['params']['TZID'] ))
+                       ? $this->recurrenceid['params']['TZID'] : ( isset( $tz )) ? $tz : null;
+      $hitval = ( !empty( $tz )) ? 7 : null;
+      $parno  = $this->_existRem( $this->recurrenceid['params'], 'VALUE', 'DATE-TIME', $hitval );
+      if( !isset( $parno )) $parno  = $this->_existRem( $this->recurrenceid['params'], 'VALUE', 'DATE', 3 );
+      $this->recurrenceid['value']  = array( 'year'  => $year, 'month' => $month, 'day' => $day );
+      if( 3 != $parno ) {
+        $this->recurrenceid['value']['hour'] = ( $hour ) ? $hour : '0';
+        $this->recurrenceid['value']['min']  = ( $min )  ? $min  : '0';
+        $this->recurrenceid['value']['sec']  = ( $sec )  ? $sec  : '0';
+        if( !empty( $tz ))
+          $this->recurrenceid['value']['tz'] = $tz;
+      }
+    }
+    if( 3 == $parno ) {
+      $this->recurrenceid['params']['VALUE'] = 'DATE';
+      unset( $this->recurrenceid['value']['tz'] );
+      unset( $this->recurrenceid['params']['TZID'] );
+    }
+    if( !empty( $this->recurrenceid['value']['tz'] )   &&
+         ( $this->recurrenceid['value']['tz'] != 'Z' ) &&
+      ( !( in_array($this->recurrenceid['value']['tz']{0}, array( '+', '-' )) &&
+           ctype_digit( substr( $this->recurrenceid['value']['tz'], 1 ))) &&
+        !ctype_digit( $this->recurrenceid['value']['tz'] ) ) ) {
+      $this->recurrenceid['params']['TZID'] = $this->recurrenceid['value']['tz'];
+      unset( $this->recurrenceid['value']['tz'] );
+    }
+    elseif( isset( $this->recurrenceid['params']['TZID'] ))
+      unset( $this->recurrenceid['params']['TZID'] );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: RELATED-TO
+ */
+/**
+ * creates formatted output for calendar component property related-to
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-24
+ * @return string
+ */
+  function createRelatedTo() {
+    $cnt = count( $this->relatedto );
+    if( 0 >= $cnt )
+      return;
+    $output = null;
+    foreach( $this->relatedto as $relation ) {
+      $attributes = $this->_createParams( $relation['params'] );
+      $content    = '<'.$relation['value'].'>';
+      $output    .= $this->_createElement( 'RELATED-TO', $attributes, $content );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property related-to
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-24
+ * @param float $relid
+ * @param array $params optional
+ * @return void
+ */
+  function setRelatedTo( $relid, $params=FALSE ) {
+    $relation           = array();
+    if(( '<' == substr( $relid, 0, 1 )) &&
+       ( '>' == substr( $relid, -1 )))
+                 $relid = substr( $relid, 1, ( strlen( $relid ) - 2 ));
+    $relation['value']  = $relid;
+    $relation['params'] = $this->_setParams( $params );
+            // remove default
+    if( isset( $relation['params']['RELTYPE'] ) &&
+       ( strtoupper( $relation['params']['RELTYPE'] ) == 'PARENT' ))
+      unset( $relation['params']['RELTYPE'] );
+    $this->relatedto[]  = $relation;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: REPEAT
+ */
+/**
+ * creates formatted output for calendar component property repeat
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createRepeat() {
+    $cnt = count( $this->repeat );
+    if( 0 >= $cnt )
+      return;
+    $attributes = $this->_createParams( $this->repeat['params'] );
+    return $this->_createElement( 'REPEAT', $attributes, $this->repeat['value'] );
+  }
+/**
+ * set calendar component property transp
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param string $value
+ * @param array $params optional
+ * @return void
+ */
+  function setRepeat( $value, $params=FALSE ) {
+    $this->repeat['value']  = $value;
+    $this->repeat['params'] = $this->_setParams( $params );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: REQUEST-STATUS
+ */
+/**
+ * creates formatted output for calendar component property request-status
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-16
+ * @return string
+ */
+  function createRequestStatus() {
+    $cnt = count( $this->requeststatus );
+    if( 0 >= $cnt )
+      return;
+    $output = null;
+    foreach( $this->requeststatus as $rstat ) {
+      $attributes = $this->_createParams( $rstat['params'], array( 'LANGUAGE' ));
+      $content    = number_format( (float) $rstat['value']['statcode'], 2, '.', '');
+      $content   .= ';'.$this->_strrep( $rstat['value']['text'] );
+      if( isset( $rstat['value']['extdata'] ))
+        $content .= ';'.$this->_strrep( $rstat['value']['extdata'] );
+      $output    .= $this->_createElement( 'REQUEST-STATUS', $attributes, $content );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property request-status
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-16
+ * @param float $statcode
+ * @param string $text
+ * @param string $extdata optional
+ * @param array params optional
+ * @return void
+ */
+  function setRequestStatus( $statcode, $text, $extdata=FALSE, $params=FALSE ) {
+    $input = array();
+    $input['value']['statcode']  = $statcode;
+    $input['value']['text']      = $text;
+    if( $extdata )
+      $input['value']['extdata'] = $extdata;
+    $input['params']    = $this->_setParams( $params);
+    $this->requeststatus[] = $input;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: RESOURCES
+ */
+/**
+ * creates formatted output for calendar component property resources
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-19
+ * @return string
+ */
+  function createResources() {
+    if( 0 >= count( $this->resources ))
+      return;
+    $output = null;
+    foreach( $this->resources as $resource ) {
+      $attributes = $this->_createParams( $resource['params'], array( 'ALTREP', 'LANGUAGE' ));
+      $output    .= $this->_createElement( 'RESOURCES', $attributes, $resource['value'] );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property recources
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-19
+ * @param mixed $value
+ * @param array params optional
+ * @return void
+ */
+  function setResources( $value, $params=FALSE ) {
+    $input = array();
+    $value = ( is_array( $value )) ? implode( ',', $value ) : $value;
+    $value = str_replace( ', ', ',', $value );
+    $value = str_replace( ' ,', ',', $value );
+    $input['value']    = $value;
+    $input['params']   = $this->_setParams( $params );
+    $this->resources[] = $input;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: RRULE
+ */
+/**
+ * creates formatted output for calendar component property rrule
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.7.43 - 2006-09-15
+ * @return string
+ */
+  function createRrule() {
+    $cnt = count( $this->rrule );
+    if( 0 >= $cnt )
+      return;
+    return $this->_format_recur( 'RRULE', $this->rrule );
+  }
+/**
+ * set calendar component property rrule
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param array $rruleset
+ * @param array $params optional
+ * @return void
+ */
+  function setRrule( $rruleset, $params=FALSE ) {
+    $exrule = array();
+    foreach( $rruleset as $rrulelabel => $rrulevalue ) {
+      $rrulelabel = strtoupper( $rrulelabel );
+      if( 'UNTIL'  != $rrulelabel )
+        $rrule['value'][$rrulelabel] = $rrulevalue;
+      elseif( is_array( $rrulevalue ) &&
+            (( 3 == count( $rrulevalue )) ||
+             ( 6 == count( $rrulevalue )) ||
+             ( 7 == count( $rrulevalue )) ||
+             ( array_key_exists( 'year', $rrulevalue )))) {
+        $parno = ( 3 < count( $rrulevalue )) ? 7 : 3 ; // datetime / date
+        $date  = $this->_date_time_array( $rrulevalue, $parno );
+        if(( 3 < count( $date )) && !isset( $date['tz'] ))
+          $date['tz'] = 'Z';
+        $rrule['value'][$rrulelabel] = $date;
+      }
+      elseif( is_array( $rrulevalue ) && isset( $rrulevalue['timestamp'] )) {
+        $date  = $this->_date_time_string( date( 'Y-m-d H:i:s', $rrulevalue['timestamp'] ), 6 );
+        $date['tz'] = 'Z';
+        $rrule['value'][$rrulelabel] = $date;
+      }
+      elseif( 8 <= strlen( trim( $rrulevalue ))) { // ex. 2006-08-03 10:12:18
+        $date = $this->_date_time_string( $rrulevalue );
+        if(( 3 < count( $date )) && !isset( $date['tz'] ))
+          $date['tz'] = 'Z';
+        $rrule['value'][$rrulelabel] = $date;
+      }
+    }
+    $rrule['params'] = $this->_setParams( $params );
+    $this->rrule[]   = $rrule;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: SEQUENCE
+ */
+/**
+ * creates formatted output for calendar component property sequence
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createSequence() {
+    $cnt = count( $this->sequence );
+    if( 0 >= $cnt )
+      return;
+    $attributes = $this->_createParams( $this->sequence['params'] );
+    return $this->_createElement( 'SEQUENCE', $attributes, $this->sequence['value'] );
+  }
+/**
+ * set calendar component property sequence
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-04-25
+ * @param int $value optional
+ * @param array $params optional
+ * @return void
+ */
+  function setSequence( $value=FALSE, $params=FALSE ) {
+    if( !$value )
+      $value = $this->getProperty( 'sequence' ) + 1;
+    $this->sequence['value']  = $value;
+    $this->sequence['params'] = $this->_setParams( $params );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: STATUS
+ */
+/**
+ * creates formatted output for calendar component property status
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createStatus() {
+    $cnt = count( $this->status );
+    if( 0 >= $cnt )
+      return;
+    $attributes = $this->_createParams( $this->status['params'] );
+    return $this->_createElement( 'STATUS', $attributes, $this->status['value'] );
+  }
+/**
+ * set calendar component property status
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param string $value
+ * @param array $params optional
+ * @return void
+ */
+  function setStatus( $value, $params=FALSE ) {
+    $this->status['value']  = $value;
+    $this->status['params'] = $this->_setParams( $params );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: SUMMARY
+ */
+/**
+ * creates formatted output for calendar component property summary
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createSummary() {
+    $cnt = count( $this->summary );
+    if( 0 >= $cnt )
+      return;
+    $attributes = $this->_createParams( $this->summary['params'], array( 'ALTREP', 'LANGUAGE' ));
+    $content    = $this->_strrep( $this->summary['value'] );
+    return $this->_createElement( 'SUMMARY', $attributes, $content );
+  }
+/**
+ * set calendar component property summary
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param string $value
+ * @param string $params optional
+ * @return void
+ */
+  function setSummary( $value, $params=FALSE ) {
+    $this->summary['value']  = $value;
+    $this->summary['params'] = $this->_setParams( $params );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: TRANSP
+ */
+/**
+ * creates formatted output for calendar component property transp
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createTransp() {
+    $cnt = count( $this->transp );
+    if( 0 >= $cnt )
+      return;
+    $attributes = $this->_createParams( $this->transp['params'] );
+    return $this->_createElement( 'TRANSP', $attributes, $this->transp['value'] );
+  }
+/**
+ * set calendar component property transp
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param string $value
+ * @param string $params optional
+ * @return void
+ */
+  function setTransp( $value, $params=FALSE ) {
+    $this->transp['value']  = $value;
+    $this->transp['params'] = $this->_setParams( $params );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: TRIGGER
+ */
+/**
+ * creates formatted output for calendar component property trigger
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.19 - 2007-03-27
+ * @return string
+ */
+  function createTrigger() {
+    $cnt = count( $this->trigger );
+    if( 0 >= $cnt )
+      return;
+    $content = $attributes = null;
+    if( isset( $this->trigger['value']['year'] )   &&
+        isset( $this->trigger['value']['month'] )  &&
+        isset( $this->trigger['value']['day'] ))
+      $content      .= $this->_format_date_time( $this->trigger['value'] );
+    else {
+      if( TRUE !== $this->trigger['value']['relatedstart'] )
+        $attributes .= $this->intAttrDelimiter.'RELATED=END';
+      if( $this->trigger['value']['before'] )
+        $content    .= '-';
+      $content      .= $this->_format_duration( $this->trigger['value'] );
+    }
+    $attributes     .= $this->_createParams( $this->trigger['params'] );
+    return $this->_createElement( 'TRIGGER', $attributes, $content );
+  }
+/**
+ * set calendar component property trigger
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-01
+ * @param mixed $year
+ * @param mixed $month optional
+ * @param int $day optional
+ * @param int $week optional
+ * @param int $hour optional
+ * @param int $min optional
+ * @param int $sec optional
+ * @param bool $relatedEnd optional
+ * @param bool $after optional
+ * @param string $tz optional
+ * @param array $params optional
+ * @return void
+ */
+  function setTrigger( $year=FALSE, $month=FALSE, $day=FALSE, $week=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $relatedEnd=FALSE, $after=FALSE, $tz=FALSE, $params=FALSE ) {
+    if( is_array( $year ) && array_key_exists( 'timestamp', $year )) { // timestamp
+      $params = $this->_setParams( $month );
+      $this->_existRem( $params, 'VALUE', 'DATE-TIME' );
+      if( isset( $params['TZID'] )) {
+        $year['tz'] = $params['TZID'];
+        unset( $params['TZID'] );
+      }
+      $tz     = ( isset( $year['tz'] )) ? ' '.$year['tz'] : null;
+      $parno  = ( isset( $tz )) ? 7 : 6;
+      $date   = $this->_date_time_string( date( 'Y-m-d H:i:s', $year['timestamp'] ).$tz, $parno );
+      foreach( $date as $k => $v )
+        $$k = $v;
+    }
+    elseif( is_array( $year )) {
+      if( array_key_exists( 'year',  $year ) &&
+          array_key_exists( 'month', $year ) &&
+          array_key_exists( 'day',   $year )) {  // date-time
+        $params = $this->_setParams( $month );
+        if( isset( $params['TZID'] )) {
+          $year['tz'] = $params['TZID'];
+          unset( $params['TZID'] );
+        }
+      }
+      else { // duration
+        $relatedEnd = $month;
+        $after      = $day;
+        $params = $this->_setParams( $week );
+      }
+      $this->_existRem( $params, 'VALUE', 'DATE-TIME' );
+      $this->_existRem( $params, 'VALUE', 'DURATION' );
+      $SSYY  = ( array_key_exists( 'year',  $year )) ? $year['year']  : null;
+      $month = ( array_key_exists( 'month', $year )) ? $year['month'] : null;
+      $day   = ( array_key_exists( 'day',   $year )) ? $year['day']   : null;
+      $week  = ( array_key_exists( 'week',  $year )) ? $year['week']  : null;
+      $hour  = ( array_key_exists( 'hour',  $year )) ? $year['hour']  : null;
+      $min   = ( array_key_exists( 'min',   $year )) ? $year['min']   : null;
+      $sec   = ( array_key_exists( 'sec',   $year )) ? $year['sec']   : null;
+      $tz    = ( array_key_exists( 'tz',    $year )) ? $year['tz']    : null;
+      $year  = $SSYY;
+    }
+    elseif( is_string($year) && !is_int( $year )) {  // duration or date in a string
+      $params = $this->_setParams( $month );
+      unset( $month );
+      $this->_existRem( $params, 'VALUE', 'DATE-TIME' );   // ??
+      $this->_existRem( $params, 'VALUE', 'DURATION' );
+      if( in_array( $year{0}, array( 'P', '+', '-' ))) { // duration
+        if( '-' == $year{0} )
+          $after = FALSE;
+        elseif( '+' == $year{0} )
+          $after = TRUE;
+        elseif( 'P' == $year{0} )
+          $after = TRUE;
+        if( 'P' != $year{0} )
+          $year  = substr( $year, 1 );
+        $date    = $this->_duration_string( $year);
+      }
+      else {
+        $date    = $this->_date_time_string( $year, 7 );   // date
+        if( isset( $params['TZID'] )) {
+          $date['tz'] = $params['TZID'];
+          unset( $params['TZID'] );
+        }
+      }
+      foreach( $date as $k => $v )
+        $$k = $v;
+    }
+    else
+      $params = $this->_setParams( $params );
+    if( !empty( $year ) && !empty( $month ) && !empty( $day ) ) { // date
+      $params['VALUE'] = 'DATE-TIME';
+      $this->trigger['value'] = array( 'year'  => $year
+                                     , 'month' => $month
+                                     , 'day'   => $day);
+      $this->trigger['value']['hour']   = $hour;
+      $this->trigger['value']['min']    = $min;
+      $this->trigger['value']['sec']    = $sec;
+      if( !empty( $tz ))
+        $this->trigger['value']['tz']   = $tz;
+      else
+        $this->trigger['value']['tz']   = 'Z';
+    }
+    else {                                                   // duration
+      $this->_existRem( $params, 'VALUE', 'DURATION' );
+      if( $this->_existRem( $params, 'RELATED', 'END', TRUE ))
+        $relatedEnd = TRUE;
+      elseif( $this->_existRem( $params, 'RELATED', 'START', TRUE ))
+        $relatedEnd = FALSE;
+      if( !empty( $week )) {
+        $this->trigger['value'] = array( 'week'         => $week
+                                       , 'relatedstart' => !$relatedEnd
+                                       , 'before'       => !$after );
+      }
+      else {
+        $this->trigger['value'] = array( 'day'          => $day
+                                       , 'hour'         => $hour
+                                       , 'min'          => $min
+                                       , 'sec'          => $sec
+                                       , 'relatedstart' => !$relatedEnd
+                                       , 'before'       => !$after );
+      }
+    }
+    if( !isset( $this->trigger['value'] ))
+      return;
+    $this->trigger['params'] = $params;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: TZID
+ */
+/**
+ * creates formatted output for calendar component property tzid
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createTzid() {
+    $cnt = count( $this->tzid );
+    if( 0 >= $cnt )
+      return;
+    $attributes = $this->_createParams( $this->tzid['params'] );
+    return $this->_createElement( 'TZID', $attributes, $this->tzid['value'] );
+  }
+/**
+ * set calendar component property tzid
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param string $value
+ * @param array $params optional
+ * @return void
+ */
+  function setTzid( $value, $params=FALSE ) {
+    $this->tzid['value']   = $value;
+    if( !isset( $this->tzid['value'] ))
+      return;
+    $this->tzid['params'] = $this->_setParams( $params );
+  }
+/*********************************************************************************/
+/**
+ * .. .
+ * Property Name: TZNAME
+ */
+/**
+ * creates formatted output for calendar component property tzname
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-24
+ * @return string
+ */
+  function createTzname() {
+    $cnt = count( $this->tzname );
+    if( 0 >= $cnt )
+      return;
+    $output = null;
+    foreach( $this->tzname as $theName ) {
+      $attributes = $this->_createParams( $theName['params'], array( 'LANGUAGE' ));
+      $output    .= $this->_createElement( 'TZNAME', $attributes, $theName['value'] );
+    }
+    return $output;
+  }
+/**
+ * set calendar component property tzname
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param string $value
+ * @param string $params optional
+ * @return void
+ */
+  function setTzname( $value, $params=FALSE ) {
+    $input['value']  = $value;
+    if( empty( $input['value'] ))
+      return;
+    $input['params'] = $this->_setParams( $params );
+    $this->tzname[] = $input;
+  }
+/*********************************************************************************/
+/**
+ * Property Name: TZOFFSETFROM
+ */
+/**
+ * creates formatted output for calendar component property tzoffsetfrom
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createTzoffsetfrom() {
+    $cnt = count( $this->tzoffsetfrom );
+    if( 0 >= $cnt )
+      return;
+    $attributes = $this->_createParams( $this->tzoffsetfrom['params'] );
+    return $this->_createElement( 'TZOFFSETFROM', $attributes, $this->tzoffsetfrom['value'] );
+  }
+/**
+ * set calendar component property tzoffsetfrom
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-25
+ * @param string $value
+ * @param string $params optional
+ * @return void
+ */
+  function setTzoffsetfrom( $value, $params=FALSE ) {
+    $this->tzoffsetfrom['value']   = $value;
+    if( empty( $this->tzoffsetfrom['value'] ))
+      return;
+    $this->tzoffsetfrom['params'] = $this->_setParams( $params );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: TZOFFSETTO
+ */
+/**
+ * creates formatted output for calendar component property tzoffsetto
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createTzoffsetto() {
+    $cnt = count( $this->tzoffsetto );
+    if( 0 >= $cnt )
+      return;
+    $attributes = $this->_createParams( $this->tzoffsetto['params'] );
+    return $this->_createElement( 'TZOFFSETTO', $attributes, $this->tzoffsetto['value'] );
+  }
+/**
+ * set calendar component property tzoffsetto
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param string $value
+ * @param string $params optional
+ * @return void
+ */
+  function setTzoffsetto( $value, $params=FALSE ) {
+    $this->tzoffsetto['value']  = $value;
+    if( empty( $this->tzoffsetto['value'] ))
+      return;
+    $this->tzoffsetto['params'] = $this->_setParams( $params );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: TZURL
+ */
+/**
+ * creates formatted output for calendar component property tzurl
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createTzurl() {
+    $cnt = count( $this->tzurl );
+    if( 0 >= $cnt )
+      return;
+    $attributes = $this->_createParams( $this->tzurl['params'] );
+    return $this->_createElement( 'TZURL', $attributes, $this->tzurl['value'] );
+  }
+/**
+ * set calendar component property tzurl
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param string $value
+ * @param string $params optional
+ * @return void
+ */
+  function setTzurl( $value, $params=FALSE ) {
+    $this->tzurl['value']   = $value;
+    if( empty( $this->tzurl['value'] ))
+      return;
+    $this->tzurl['params'] = $this->_setParams( $params );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: UID
+ */
+/**
+ * creates formatted output for calendar component property uid
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createUid() {
+    $cnt = count( $this->uid );
+    if( 0 >= $cnt ) {
+      $this->_makeuid();
+    }
+    $attributes = $this->_createParams( $this->uid['params'] );
+    return $this->_createElement( 'UID', $attributes, $this->uid['value'] );
+  }
+/**
+ * create an unique id for this calendar component object instance
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-03-18
+ * @return void
+ */
+  function _makeUid() {
+    $unique = null;
+    $base   = 'aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPrRsStTuUvVxXuUvVwWzZ1234567890';
+    $start  = 0;
+    $end    = strlen( $base ) - 1;
+    $length = 10;
+    $str    = null;
+    for( $p = 0; $p < $length; $p++ ) {
+      $basePos = mt_rand( $start, $end );
+      $unique .= $base{$basePos};
+    }
+    $this->uid['value']  = date('Ymd\THisT').'-'.$unique.'@'.$this->getConfig( 'unique_id' );
+    $this->uid['params'] = null;
+  }
+/**
+ * set calendar component property uid
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param string $value
+ * @param string $params optional
+ * @return void
+ */
+  function setUid( $value, $params=FALSE ) {
+    $this->uid['value']  = $value;
+    if( empty( $this->uid['value'] ))
+      return;
+    $this->uid['params'] = $this->_setParams( $params );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: URL
+ */
+/**
+ * creates formatted output for calendar component property url
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function createUrl() {
+    $cnt = count( $this->url );
+    if( 0 >= $cnt )
+      return;
+    $attributes = $this->_createParams( $this->url['params'] );
+    return $this->_createElement( 'URL', $attributes, $this->url['value'] );
+  }
+/**
+ * set calendar component property url
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-18
+ * @param string $value
+ * @param string $params optional
+ * @return void
+ */
+  function setUrl( $value, $params=FALSE ) {
+    $this->url['value']   = $value;
+    if( empty( $this->url['value'] ))
+      return;
+    $this->url['params'] = $this->_setParams( $params );
+  }
+/*********************************************************************************/
+/**
+ * Property Name: x-prop
+ */
+/**
+ * creates formatted output for calendar component property x-prop
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.21 - 2007-03-18
+ * @return string
+ */
+  function createXprop() {
+    if( 0 >= count( $this->xprop ))
+      return;
+    $xprop = null;
+    foreach( $this->xprop as $xpropPart ) {
+      $attributes = $this->_createParams( $xpropPart['params'], array( 'LANGUAGE' ));
+      foreach( $xpropPart['value'] as $label => $value ) {
+        if( is_array( $value ))
+          $value  = implode( ',', $value );
+        $xprop   .= $this->_createElement( $label, $attributes, $value );
+      }
+    }
+    return $xprop;
+  }
+/**
+ * set calendar component property x-prop
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.21 - 2007-04-04
+ * @param string $label
+ * @param mixed $value
+ * @param array $params optional
+ * @return void
+ */
+  function setXprop( $label, $value, $params=FALSE ) {
+    $xprop['value']  = array( $label => $value);
+    if( empty( $xprop['value'][$label] ))
+      return;
+    $xprop['params'] = $this->_setParams( $params );
+    $this->xprop[]   = $xprop;
+  }
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * create element format parts
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @return string
+ */
+  function _createFormat() {
+    switch( $this->format ) {
+      case 'xcal':
+        $this->objName            = ( isset( $this->timezonetype )) ?
+                                 strtolower( $this->timezonetype )  :  strtolower( $this->objName );
+        $this->componentStart1    = $this->elementStart1 = '<';
+        $this->componentStart2    = $this->elementStart2 = '>';
+        $this->componentEnd1      = $this->elementEnd1   = '</';
+        $this->componentEnd2      = $this->elementEnd2   = '>'.$this->nl;
+        $this->intAttrDelimiter   = '<!-- -->';
+        $this->attributeDelimiter = $this->nl;
+        $this->valueInit          = null;
+        break;
+      default:
+        $this->objName            = ( isset( $this->timezonetype )) ?
+                                 strtoupper( $this->timezonetype )  :  strtoupper( $this->objName );
+        $this->componentStart1    = 'BEGIN:';
+        $this->componentStart2    = null;
+        $this->componentEnd1      = 'END:';
+        $this->componentEnd2      = $this->nl;
+        $this->elementStart1      = null;
+        $this->elementStart2      = null;
+        $this->elementEnd1        = null;
+        $this->elementEnd2        = $this->nl;
+        $this->intAttrDelimiter   = '<!-- -->';
+        $this->attributeDelimiter = ';';
+        $this->valueInit          = ':';
+        break;
+    }
+  }
+/**
+ * creates formatted output for calendar component property
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.15 - 2007-01-08
+ * @param string $label property name
+ * @param string $attributes property attributes
+ * @param string $content property content (optional)
+ * @return string
+ */
+  function _createElement( $label, $attributes, $content=FALSE ) {
+    $label  = $this->_formatPropertyName( $label );
+    $output = $this->elementStart1.$label;
+    $categoriesAttrLang = null;
+    $attachInlineBinary = FALSE;
+    $attachfmttype      = null;
+    if( !empty( $attributes ))  {
+      $attributes  = trim( $attributes );
+      if ( 'xcal' == $this->format) {
+        $attributes2 = explode( $this->intAttrDelimiter, $attributes );
+        $attributes  = null;
+        foreach( $attributes2 as $attribute ) {
+          $attrKVarr = explode( '=', $attribute );
+          if( empty( $attrKVarr[0] ))
+            continue;
+          if( !isset( $attrKVarr[1] )) {
+            $attrValue = $attrKVarr[0];
+            $attrKey   = null;
+          }
+          elseif( 2 == count( $attrKVarr)) {
+            $attrKey   = strtolower( $attrKVarr[0] );
+            $attrValue = $attrKVarr[1];
+          }
+          else {
+            $attrKey   = strtolower( $attrKVarr[0] );
+            unset( $attrKVarr[0] );
+            $attrValue = implode( '=', $attrKVarr );
+          }
+          if(( 'attach' == $label ) && ( in_array( $attrKey, array( 'fmttype', 'encoding', 'value' )))) {
+            $attachInlineBinary = TRUE;
+            if( 'fmttype' == $attrKey )
+              $attachfmttype = $attrKey.'='.$attrValue;
+            continue;
+          }
+          elseif(( 'categories' == $label ) && ( 'language' == $attrKey ))
+            $categoriesAttrLang = $attrKey.'='.$attrValue;
+          else {
+            $attributes .= ( empty( $attributes )) ? ' ' : $this->attributeDelimiter.' ';
+            $attributes .= ( !empty( $attrKey )) ? $attrKey.'=' : null;
+            if(( '"' == substr( $attrValue, 0, 1 )) && ( '"' == substr( $attrValue, -1 ))) {
+              $attrValue = substr( $attrValue, 1, ( strlen( $attrValue ) - 2 ));
+              $attrValue = str_replace( '"', '', $attrValue );
+            }
+            $attributes .= '"'.htmlspecialchars( $attrValue ).'"';
+          }
+        }
+      }
+      else {
+        $attributes = str_replace( $this->intAttrDelimiter, $this->attributeDelimiter, $attributes );
+      }
+    }
+    if(((( 'attach' == $label ) && !$attachInlineBinary ) ||
+         ( in_array( $label, array( 'tzurl', 'url' ))))      && ( 'xcal' == $this->format)) {
+      $pos = strrpos($content, "/");
+      $docname = ( $pos !== false) ? substr( $content, (1 - strlen( $content ) + $pos )) : $content;
+      $this->xcaldecl[] = array( 'xmldecl'  => 'ENTITY'
+                               , 'uri'      => $docname
+                               , 'ref'      => 'SYSTEM'
+                               , 'external' => $content
+                               , 'type'     => 'NDATA'
+                               , 'type2'    => 'BINERY' );
+      $attributes .= ( empty( $attributes )) ? ' ' : $this->attributeDelimiter.' ';
+      $attributes .= 'uri="'.$docname.'"';
+      $content = null;
+      if( 'attach' == $label ) {
+        $attributes = str_replace( $this->attributeDelimiter, $this->intAttrDelimiter, $attributes );
+        $content = $this->_createElement( 'extref', $attributes, null );
+        $attributes = null;
+      }
+    }
+    elseif(( 'attach' == $label ) && $attachInlineBinary && ( 'xcal' == $this->format)) {
+      $content = $this->nl.$this->_createElement( 'b64bin', $attachfmttype, $content ); // max one attribute
+    }
+    $output .= $attributes;
+    if( !$content ) {
+      switch( $this->format ) {
+        case 'xcal':
+          $output .= ' /';
+          $output .= $this->elementStart2;
+          return $output;
+          break;
+        default:
+          $output .= $this->elementStart2;
+          return $this->_size75( $output );
+          break;
+      }
+    }
+    $output .= $this->elementStart2;
+    switch( $label ) {
+      case 'categories':
+ //   case 'resources': ??
+        $output  .= $this->nl;
+        $items    = explode(',', $content);
+        $content  = null;
+        foreach( $items as $item )
+          $content .= $this->_createElement( 'item', $categoriesAttrLang, $item );  // max one attribute
+        break;
+      case 'geo':
+        $output  .= $this->nl;
+        list($lat, $lon) = explode(';', $content);
+        $content  = null;
+        $content .= $this->_createElement( 'lat', null, $lat );
+        $content .= $this->_createElement( 'lon', null, $lon );
+        break;
+      default:
+        break;
+    }
+    $output .= $this->valueInit.$content;
+    switch( $this->format ) {
+      case 'xcal':
+        return $output.$this->elementEnd1.$label.$this->elementEnd2;
+        break;
+      default:
+        return $this->_size75( $output );
+        break;
+    }
+  }
+/**
+ * creates formatted output for calendar component property parameters
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.22 - 2007-04-10
+ * @param array $params  optional
+ * @param array $ctrKeys optional
+ * @return string
+ */
+  function _createParams( $params=array(), $ctrKeys=array() ) {
+    $attrLANG = $attr1 = $attr2 = null;
+    $CNattrKey   = ( in_array( 'CN',       $ctrKeys )) ? TRUE : FALSE ;
+    $LANGattrKey = ( in_array( 'LANGUAGE', $ctrKeys )) ? TRUE : FALSE ;
+    $CNattrExist = $LANGattrExist = FALSE;
+    if( is_array( $params )) {
+      foreach( $params as $paramKey => $paramValue ) {
+        if( is_int( $paramKey ))
+          $attr2            .= $this->intAttrDelimiter.$paramValue;
+        elseif(( 'LANGUAGE' == $paramKey ) && $LANGattrKey ) {
+          $attrLANG         .= $this->intAttrDelimiter."LANGUAGE=$paramValue";
+          $LANGattrExist     = TRUE;
+        }
+        elseif(( 'CN'       == $paramKey ) && $CNattrKey ) {
+          $attr1             = $this->intAttrDelimiter.'CN="'.$paramValue.'"';
+          $CNattrExist       = TRUE;
+        }
+        elseif(( 'ALTREP'   == $paramKey ) && in_array( $paramKey, $ctrKeys ))
+          $attr2            .= $this->intAttrDelimiter.'ALTREP="'.$paramValue.'"';
+        elseif(( 'DIR'      == $paramKey ) && in_array( $paramKey, $ctrKeys ))
+          $attr2            .= $this->intAttrDelimiter.'DIR="'.$paramValue.'"';
+        elseif(( 'SENT-BY'  == $paramKey ) && in_array( $paramKey, $ctrKeys ))
+          $attr2            .= $this->intAttrDelimiter.'SENT-BY="MAILTO:'.$paramValue.'"';
+        else
+          $attr2            .= $this->intAttrDelimiter."$paramKey=$paramValue";
+      }
+    }
+    if( !$LANGattrExist ) {
+      $lang = $this->getConfig( 'language' );
+      if(( $CNattrExist || $LANGattrKey ) && $lang )
+        $attrLANG .= $this->intAttrDelimiter.'LANGUAGE='.$lang;
+    }
+    return $attrLANG.$attr1.$attr2;
+  }
+/**
+ * ensures internal date-time/date format for input date-time/date in array format
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-15
+ * @param array $datetime
+ * @param int $parno optional, default FALSE
+ * @return array
+ */
+  function _date_time_array( $datetime, $parno=FALSE ) {
+    $output = array();
+    foreach( $datetime as $dateKey => $datePart ) {
+      switch ( $dateKey ) {
+        case '0': case 'year':   $output['year']  = $datePart; break;
+        case '1': case 'month':  $output['month'] = $datePart; break;
+        case '2': case 'day':    $output['day']   = $datePart; break;
+      }
+      if( 3 != $parno ) {
+        switch ( $dateKey ) {
+          case '0':
+          case '1':
+          case '2': break;
+          case '3': case 'hour': $output['hour']  = $datePart; break;
+          case '4': case 'min' : $output['min']   = $datePart; break;
+          case '5': case 'sec' : $output['sec']   = $datePart; break;
+          case '6': case 'tz'  : $output['tz']    = $datePart; break;
+        }
+      }
+    }
+    if( 3 != $parno ) {
+      if( !isset( $output['hour'] ))
+        $output['hour'] = 0;
+      if( !isset( $output['min']  ))
+        $output['min'] = 0;
+      if( !isset( $output['sec']  ))
+        $output['sec'] = 0;
+    }
+    return $output;
+  }
+/**
+ * ensures internal date-time/date format for input date-time/date in string fromat
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.9 - 2006-11-28
+ * @param array $datetime
+ * @param int $parno optional, default FALSE
+ * @return array
+ */
+  function _date_time_string( $datetime, $parno=FALSE ) {
+    $datetime = trim( $datetime );
+    $tz  = null;
+    $len = strlen( $datetime ) - 1;
+    if( 'Z' == substr( $datetime, -1 )) {
+      $tz = 'Z';
+      $datetime = trim( substr( $datetime, 0, $len ));
+    }
+    elseif( ( ctype_digit( substr( $datetime, -2, 2 ))) && // time or date
+            ( '-' == substr( $datetime, -3, 1 )) ||
+            ( ':' == substr( $datetime, -3, 1 )) ||
+            ( '.' == substr( $datetime, -3, 1 ))) {
+      // continue;
+    }
+    elseif( ( ctype_digit( substr( $datetime, -4, 4 ))) && // 4 pos offset
+            ( ' +' == substr( $datetime, -6, 2 )) ||
+            ( ' -' == substr( $datetime, -6, 2 ))) {
+      $tz = substr( $datetime, -5, 5 );
+      $datetime = substr( $datetime, 0, ($len - 5));
+    }
+    elseif( ( ctype_digit( substr( $datetime, -6, 6 ))) && // 6 pos offset
+            ( ' +' == substr( $datetime, -8, 2 )) ||
+            ( ' -' == substr( $datetime, -8, 2 ))) {
+      $tz = substr( $datetime, -7, 7 );
+      $datetime = substr( $datetime, 0, ($len - 7));
+    }
+    elseif( ( 6 < $len ) && ( ctype_digit( substr( $datetime, -6, 6 )))) {
+      // continue;
+    }
+    elseif( 'T' ==  substr( $datetime, -7, 1 )) {
+      // continue;
+    }
+    else {
+      $cx  = $tx = 0;    //  19970415T133000 US-Eastern
+      $prevchar = null;
+      for( $cx = -1; $cx > ( 9 - $len ); $cx-- ) {
+        if(( ctype_alpha( substr( $datetime, $cx, 1 ))) ||
+           (       ( ctype_alpha( $prevchar )) &&                     // prev char
+                ( '-' ==  substr( $datetime, $cx, 1 )) &&             // this char
+           ( ctype_alpha( substr( $datetime, ( $cx - 1) , 1 ))) ) ) { // next char
+          $tx++;
+          $prevchar = substr( $datetime, $cx, 1 );
+        }
+        else
+          break;
+      }
+      if( 0 < $tx ) {
+        $tz = substr( $datetime, ( 0 - $tx  ));
+        $datetime = trim( substr( $datetime, 0, $len - $tx + 1 ));
+      }
+    }
+  //    echo "_date_time_string 1a:  $datetime tz=$tz.<br />\n"; // test ###
+    if( 0 < substr_count( $datetime, '-' )) {
+      $datetime = str_replace( '-', '/', $datetime );
+  //    echo "_date_time_string 1b:  $datetime tz=$tz.<br />\n"; // test ###
+    }
+    $datestring = date( 'Y-m-d H:i:s', strtotime( $datetime ));
+  //    echo "_date_time_string 2:  $datestring tz=$tz.<br />\n"; // test ###
+    $output     = array();
+    $output['year']    = substr( $datestring, 0, 4 );
+    $output['month']   = substr( $datestring, 5, 2 );
+    $output['day']     = substr( $datestring, 8, 2 );
+    if(( 6 == $parno ) || ( 7 == $parno )) {
+      $output['hour']  = substr( $datestring, 11, 2 );
+      $output['min']   = substr( $datestring, 14, 2 );
+      $output['sec']   = substr( $datestring, 17, 2 );
+      if( !empty( $tz ))
+        $output['tz']  = $tz;
+    }
+    elseif( 3 != $parno ) {
+      if(( '00' < substr( $datestring, 11, 2 )) ||
+         ( '00' < substr( $datestring, 14, 2 )) ||
+         ( '00' < substr( $datestring, 17, 2 ))) {
+        $output['hour']  = substr( $datestring, 11, 2 );
+        $output['min']   = substr( $datestring, 14, 2 );
+        $output['sec']   = substr( $datestring, 17, 2 );
+      }
+      if( !empty( $tz ))
+        $output['tz']  = $tz;
+    }
+    return $output;
+  }
+/**
+ * ensures internal duration format for input in array format
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-15
+ * @param array $duration
+ * @return array
+ */
+  function _duration_array( $duration ) {
+    $output = array();
+    foreach( $duration as $durKey => $durValue ) {
+      switch ( $durKey ) {
+        case '0': case 'week': $output['week']  = $durValue; break;
+        case '1': case 'day':  $output['day']   = $durValue; break;
+        case '2': case 'hour': $output['hour']  = $durValue; break;
+        case '3': case 'min':  $output['min']   = $durValue; break;
+        case '4': case 'sec':  $output['sec']   = $durValue; break;
+      }
+    }
+    if( isset( $output['week'] ) && ( 0 < $output['week'] ))
+      return $output;
+    elseif (( isset( $output['hour'] ) && ( 0 < $output['hour'] )) ||
+            ( isset( $output['min'] )  && ( 0 < $output['min']  )) ||
+             (isset( $output['sec'] )  && ( 0 < $output['sec']  ))) {
+      if( !isset( $output['hour'] ))
+        $output['hour'] = 0;
+      if( !isset( $output['min']  ))
+        $output['min']  = 0;
+      if( !isset( $output['sec']  ))
+        $output['sec']  = 0;
+    }
+    return $output;
+  }
+/**
+ * ensures internal duration format for input in string format
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.18 - 2007-03-14
+ * @param string $duration
+ * @return array
+ */
+  function _duration_string( $duration ) {
+   $duration = trim( $duration );
+   while( 'P' != strtoupper( substr( $duration, 0, 1 ))) {
+     if( 0 < strlen( $duration ))
+       $duration = substr( $duration, 1 );
+     else
+       return false; // no leading P !?!?
+   }
+   $duration = substr( $duration, 1 ); // skip P
+   $duration = str_replace ( 't', 'T', $duration );
+   $duration = str_replace ( 'T', '', $duration );
+   $output = array();
+   $val    = null;
+   for( $ix=0; $ix < strlen( $duration ); $ix++ ) {
+     switch( strtoupper( $duration{$ix} )) {
+      case 'W':
+        $output['week'] = $val;
+        $val            = null;
+        break;
+      case 'D':
+        $output['day']  = $val;
+        $val            = null;
+        break;
+      case 'H':
+        $output['hour'] = $val;
+        $val            = null;
+        break;
+      case 'M':
+        $output['min']  = $val;
+        $val            = null;
+        break;
+      case 'S':
+        $output['sec']  = $val;
+        $val            = null;
+        break;
+      default:
+        if( !ctype_digit( $duration{$ix} ))
+          return false; // unknown duration controll character  !?!?
+        else
+          $val .= $duration{$ix};
+     }
+   }
+   return $this->_duration_array( $output );
+  }
+/**
+ * if exist, remove key with expected value from array and return spec. value
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.19 - 2007-03-18
+ * @param array $array
+ * @param string $expkey
+ * @param string $expval
+ * @param int $hitval optional
+ * @return int
+ */
+  function _existRem( &$array, $expkey, $expval=FALSE, $hitval=null ) {
+    if( !is_array( $array ) || ( 0 == count( $array )))
+      return null;
+    if( !isset( $array[$expkey] ))
+      return null;
+    if( !$expval )
+      return $hitval;
+    if( $expval != $array[$expkey] )
+      return null;
+    unset( $array[$expkey] );
+    return $hitval;
+  }
+/**
+ * creates formatted output for calendar component property data value type date/date-time
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-20
+ * @param array   $datetime
+ * @param int     $parno, optional, default 6
+ * @return string
+ */
+  function _format_date_time( $datetime, $parno=6 ) {
+    if( !isset( $datetime['year'] )  &&
+        !isset( $datetime['month'] ) &&
+        !isset( $datetime['day'] )   &&
+        !isset( $datetime['hour'] )  &&
+        !isset( $datetime['min'] )   &&
+        !isset( $datetime['sec'] ))
+      return ;
+    $output = null;
+    $output = date('Ymd', mktime ( 0, 0, 0
+                                 , (integer) $datetime['month']
+                                 , (integer) $datetime['day']
+                                 , (integer) $datetime['year']));
+    if( isset( $datetime['hour'] )  ||
+        isset( $datetime['min'] )   ||
+        isset( $datetime['sec'] )   ||
+        isset( $datetime['tz'] )) {
+      if( isset( $datetime['tz'] )  &&
+         !isset( $datetime['hour'] ))
+        $datetime['hour'] = '0';
+      if( isset( $datetime['hour'] )  &&
+         !isset( $datetime['min'] ))
+        $datetime['min'] = '0';
+      if( isset( $datetime['hour'] )  &&
+          isset( $datetime['min'] )   &&
+         !isset( $datetime['sec'] ))
+        $datetime['sec'] = '0';
+      foreach( $datetime as $dkey => $dvalue ) {
+        if( 'tz' != $dkey )
+          $datetime[$dkey] = (integer) $dvalue;
+      }
+      $output .= date('\THis', mktime ( $datetime['hour']
+                                      , $datetime['min']
+                                      , $datetime['sec']
+                                      , $datetime['month']
+                                      , $datetime['day']
+                                      , $datetime['year']));
+      if( isset( $datetime['tz'] ) && ( '' < trim ( $datetime['tz'] ))) {
+        $datetime['tz'] = trim( $datetime['tz'] );
+        $offset = 0;
+        if( 'Z' == $datetime['tz'] ) {
+          $output .= 'Z';
+        }
+        if((     5  == strlen( $datetime['tz'] )) &&
+           ( '0000' <= substr( $datetime['tz'], -4 )) &&
+           ( '9999' >= substr( $datetime['tz'], -4 )) &&
+             (( '+' == substr( $datetime['tz'], 0, 1 )) ||
+              ( '-' == substr( $datetime['tz'], 0, 1 )))) {
+          $hours2sec = substr( $datetime['tz'], 1, 2 ) * 3600;
+          $min2sec   = substr( $datetime['tz'], -2 )   * 60;
+          $sign      = substr( $datetime['tz'], 0, 1 );
+          $offset    = $sign.'1' * ($hours2sec + $min2sec );
+        }
+        elseif(( 7  == strlen( $datetime['tz'] )) &&
+         ( '000000' <= substr( $datetime['tz'], -6 )) &&
+         ( '999999' >= substr( $datetime['tz'], -6 )) &&
+             (( '+' == substr( $datetime['tz'], 0, 1 )) ||
+              ( '-' == substr( $datetime['tz'], 0, 1 )))) {
+          $hours2sec = substr( $datetime['tz'], 1, 2 ) * 3600;
+          $min2sec   = substr( $datetime['tz'], 3, 2 ) *   60;
+          $sec       = substr( $datetime['tz'], -2 );
+          $sign      = substr( $datetime['tz'], 0, 1 );
+          $offset    = $sign.'1' * ( $hours2sec + $min2sec + $sec );
+        }
+        if( 0 != $offset ) {
+          $output    = date('Ymd\THis\Z', mktime ( $datetime['hour']
+                                                 , $datetime['min']
+                                                 , $datetime['sec'] + $offset
+                                                 , $datetime['month']
+                                                 , $datetime['day']
+                                                 , $datetime['year']));
+        }
+      }
+      elseif( 7 == $parno )
+        $output .= 'Z';
+    }
+    return $output;
+  }
+/**
+ * creates formatted output for calendar component property data value type duration
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-13
+ * @param array $duration ( week, day, hour, min, sec )
+ * @return string
+ */
+  function _format_duration( $duration ) {
+    if( !isset( $duration['week'] ) &&
+        !isset( $duration['day'] )  &&
+        !isset( $duration['hour'] ) &&
+        !isset( $duration['min'] )  &&
+        !isset( $duration['sec'] ))
+      return;
+    $output = 'P';
+    if( isset( $duration['week'] ) && ( 0 < $duration['week'] ))
+      $output       .= $duration['week'].'W';
+    else {
+      if( isset($duration['day'] ) && ( 0 < $duration['day'] ))
+        $output     .= $duration['day'].'D';
+      if(( isset( $duration['hour']) && ( 0 < $duration['hour'] )) ||
+         ( isset( $duration['min'])  && ( 0 < $duration['min'] ))  ||
+         ( isset( $duration['sec'])  && ( 0 < $duration['sec'] ))) {
+        $output     .= 'T';
+        if( 0 < $duration['hour'] ) {
+          $output   .= $duration['hour'].'H';
+          if( 0 < $duration['min'] ) {
+            $output .= $duration['min'].'M';
+            if( 0 < $duration['sec'] )
+              $output .= $duration['sec'].'S';
+          }
+          elseif( 0 < $duration['sec'] )
+            $output .= '0M'.$duration['sec'].'S';
+        }
+        elseif( 0 < $duration['min'] ) {
+          $output   .= '0H'.$duration['min'].'M';
+          if( 0 < $duration['sec'] )
+            $output .= $duration['sec'].'S';
+        }
+        elseif( 0 < $duration['sec'] )
+          $output   .= '0H0M'.$duration['sec'].'S';
+      }
+    }
+    return $output;
+  }
+/**
+ * creates formatted output for calendar component property data value type recur
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @param array $recurlabel
+ * @param array $recurdata
+ * @return string
+ */
+  function _format_recur ( $recurlabel, $recurdata ) {
+    $recur = null;
+    foreach( $recurdata as $therule ) {
+      $attributes = ( isset( $therule['params'] )) ? $this->_createParams( $therule['params'] ) : null;
+      $content1  = $content2  = null;
+      foreach( $therule['value'] as $rulelabel => $rulevalue ) {
+        switch( $rulelabel ) {
+          case 'FREQ': {
+            $content1 .= "FREQ=$rulevalue";
+            break;
+          }
+          case 'UNTIL': {
+            $content2 .= ";UNTIL=";
+            $content2 .= $this->_format_date_time( $rulevalue );
+            break;
+          }
+          case 'COUNT':
+          case 'INTERVAL':
+          case 'WKST': {
+            $content2 .= ";$rulelabel=$rulevalue";
+            break;
+          }
+          case 'BYSECOND':
+          case 'BYMINUTE':
+          case 'BYHOUR':
+          case 'BYMONTHDAY':
+          case 'BYYEARDAY':
+          case 'BYWEEKNO':
+          case 'BYMONTH':
+          case 'BYSETPOS': {
+            $content2 .= ";$rulelabel=";
+            if( is_array( $rulevalue )) {
+              foreach( $rulevalue as $vix => $valuePart ) {
+                $content2 .= ( $vix ) ? ',' : null;
+                $content2 .= $valuePart;
+              }
+            }
+            else
+             $content2 .= $rulevalue;
+            break;
+          }
+          case 'BYDAY': {
+            $content2 .= ";$rulelabel=";
+            $bydaycnt = 0;
+            foreach( $rulevalue as $vix => $valuePart ) {
+              $content21 = $content22 = null;
+              if( is_array( $valuePart )) {
+                $content2 .= ( $bydaycnt ) ? ',' : null;
+                foreach( $valuePart as $vix2 => $valuePart2 ) {
+                  if( 'DAY' != strtoupper( $vix2 ))
+                      $content21 .= $valuePart2;
+                  else
+                    $content22 .= $valuePart2;
+                }
+                $content2 .= $content21.$content22;
+                $bydaycnt++;
+              }
+              else {
+                $content2 .= ( $bydaycnt ) ? ',' : null;
+                if( 'DAY' != strtoupper( $vix ))
+                    $content21 .= $valuePart;
+                else {
+                  $content22 .= $valuePart;
+                  $bydaycnt++;
+                }
+                $content2 .= $content21.$content22;
+              }
+            }
+            break;
+          }
+          default: {
+            $content2 .= ";$rulelabel=$rulevalue";
+            break;
+          }
+        }
+      }
+      $recur .= $this->_createElement( $recurlabel, $attributes, $content1.$content2 );
+    }
+    return $recur;
+  }
+/**
+ * create property name case - lower/upper
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @param string $propertyName
+ * @return string
+ */
+  function _formatPropertyName( $propertyName ) {
+    switch( $this->format ) {
+      case 'xcal':
+        return strtolower( $propertyName );
+        break;
+      default:
+        return strtoupper( $propertyName );
+        break;
+    }
+  }
+/**
+ * set input (formatted) parameters- component property attributes
+ *
+ * default parameters can be set, if missing
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-01
+ * @param array $params
+ * @param array $defaults
+ * @return array
+ */
+  function _setParams( $params, $defaults=FALSE ) {
+    if( !is_array( $params))
+      $params = array();
+    $input = array();
+    foreach( $params as $paramKey => $paramValue ) {
+      if( is_array( $paramValue )) {
+        foreach( $paramValue as $pkey => $pValue ) {
+          if(( '"' == substr( $pValue, 0, 1 )) && ( '"' == substr( $pValue, -1 )))
+            $paramValue[$pkey] = substr( $pValue, 1, ( strlen( $pValue ) - 2 ));
+        }
+      }
+      elseif(( '"' == substr( $paramValue, 0, 1 )) && ( '"' == substr( $paramValue, -1 )))
+        $paramValue = substr( $paramValue, 1, ( strlen( $paramValue ) - 2 ));
+      if( 'VALUE' == strtoupper( $paramKey ))
+        $input['VALUE']                 = strtoupper( $paramValue );
+      else
+        $input[strtoupper( $paramKey )] = $paramValue;
+    }
+    if( is_array( $defaults )) {
+      foreach( $defaults as $paramKey => $paramValue ) {
+        if( !isset( $input[$paramKey] ))
+          $input[$paramKey] = $paramValue;
+      }
+    }
+    return (0 < count( $input )) ? $input : null;
+  }
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * get general component config variables or info about subcomponents
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-24
+ * @param string $config
+ * @return value
+ */
+  function getConfig( $config ) {
+    switch( strtoupper( $config )) {
+      case 'COMPSINFO':
+        unset( $this->compix );
+        $info = array();
+        foreach( $this->subcomponents as $cix => $component ) {
+          unset( $component->propix );
+          $info[$cix]['ordno'] = $cix + 1;
+          $info[$cix]['type']  = $component->objName;
+          $info[$cix]['uid']   = $component->getProperty( 'uid' );
+          $info[$cix]['props'] = $component->getConfig( 'propinfo' );
+          $info[$cix]['sub']   = $component->getConfig( 'compsinfo' );
+        }
+        return $info;
+        break;
+      case 'FORMAT':
+        return $this->format;
+        break;
+      case 'LANGUAGE':
+         // get language for calendar component as defined in [RFC 1766]
+        return $this->language;
+        break;
+      case 'NL':
+        return $this->nl;
+        break;
+      case 'PROPINFO':
+        $output = array();
+        if( 0 < count( $this->action ))
+          $output['ACTION'] = count( $this->action ) / 2;
+        if( 0 < count( $this->attach ))
+          $output['ATTACH'] = count( $this->attach );
+        if( 0 < count( $this->attendee ))
+          $output['ATTENDEE'] = count( $this->attendee );
+        if( 0 < count( $this->categories ))
+          $output['CATEGORIES'] = count( $this->categories );
+        if( 0 < count( $this->class ))
+          $output['CLASS'] = count( $this->class ) / 2;
+        if( 0 < count( $this->comment ))
+          $output['COMMENT'] = count( $this->comment );
+        if( 0 < count( $this->completed ))
+          $output['COMPLETED'] = count( $this->completed ) / 2;
+        if( 0 < count( $this->contact ))
+          $output['CONTACT'] = count( $this->contact );
+        if( 0 < count( $this->created ))
+          $output['CREATED'] = count( $this->created ) / 2;
+        if( 0 < count( $this->description ))
+          $output['DESCRIPTION'] = count( $this->description );
+        if( 0 < count( $this->dtend ))
+          $output['DTEND'] = count( $this->dtend ) / 2;
+        if( 0 < count( $this->dtstart ))
+          $output['DTSTART'] = count( $this->dtstart ) / 2;
+        if( 0 < count( $this->dtstamp ))
+          $output['DTSTAMP'] = count( $this->dtstamp ) / 2;
+        if( 0 < count( $this->due ))
+          $output['DUE'] = count( $this->due ) / 2;
+        if( 0 < count( $this->duration ))
+          $output['DURATION'] = count( $this->duration ) / 2;
+        if( 0 < count( $this->exdate ))
+          $output['EXDATE'] = count( $this->exdate );
+        if( 0 < count( $this->exrule ))
+          $output['EXRULE'] = count( $this->exrule );
+        if( 0 < count( $this->freebusy ))
+          $output['FREEBUSY'] = count( $this->freebusy );
+        if( 0 < count( $this->geo ))
+          $output['GEO'] = count( $this->geo ) / 2;
+        if( 0 < count( $this->lastmodified ))
+          $output['LAST-MODIFIED'] = count( $this->lastmodified ) / 2;
+        if( 0 < count( $this->location ))
+          $output['LOCATION'] = count( $this->location ) / 2;
+        if( 0 < count( $this->organizer ))
+          $output['ORGANIZER'] = count( $this->organizer ) / 2;
+        if( 0 < count( $this->percentcomplete ))
+          $output['PERCENT-COMPLETE'] = count( $this->percentcomplete ) / 2;
+        if( 0 < count( $this->priority ))
+          $output['PRIORITY'] = count( $this->priority ) / 2;
+        if( 0 < count( $this->rdate ))
+          $output['RDATE'] = count( $this->rdate );
+        if( 0 < count( $this->recurrenceid ))
+          $output['RECURRENCE-ID'] = count( $this->recurrenceid ) / 2;
+        if( 0 < count( $this->relatedto ))
+          $output['RELATED-TO'] = count( $this->relatedto );
+        if( 0 < count( $this->repeat ))
+          $output['REPEAT'] = count( $this->repeat ) / 2;
+        if( 0 < count( $this->requeststatus ))
+          $output['REQUEST-STATUS'] = count( $this->requeststatus );
+        if( 0 < count( $this->resources ))
+          $output['RESOURCES'] = count( $this->resources );
+        if( 0 < count( $this->sequence ))
+          $output['SEQUENCE'] = count( $this->sequence ) / 2;
+        if( 0 < count( $this->rrule ))
+          $output['RRULE'] = count( $this->rrule );
+        if( 0 < count( $this->status ))
+          $output['STATUS'] = count( $this->status ) / 2;
+        if( 0 < count( $this->summary ))
+          $output['SUMMARY'] = count( $this->summary ) / 2;
+        if( 0 < count( $this->transp ))
+          $output['TRANSP'] = count( $this->transp ) / 2;
+        if( 0 < count( $this->trigger ))
+          $output['TRIGGER'] = count( $this->trigger ) / 2;
+        if( 0 < count( $this->tzid ))
+          $output['TZID'] = count( $this->tzid ) / 2;
+        if( 0 < count( $this->tzname ))
+          $output['TZNAME'] = count( $this->tzname );
+        if( 0 < count( $this->tzoffsetfrom ))
+          $output['TZOFFSETTFROM'] = count( $this->tzoffsetfrom ) / 2;
+        if( 0 < count( $this->tzoffsetto ))
+          $output['TZOFFSETTO'] = count( $this->tzoffsetto ) / 2;
+        if( 0 < count( $this->tzurl ))
+          $output['TZURL'] = count( $this->tzurl ) / 2;
+        if( !in_array( $this->objName, array( 'valarm', 'vtimezone' ))) {
+          if( empty( $this->uid['value'] ))
+            $this->_makeuid();
+          $output['UID'] = 1;
+        }
+        if( 0 < count( $this->url ))
+          $output['URL'] = count( $this->url ) / 2;
+        if( 0 < count( $this->xprop ))
+          $output['X-PROP'] = count( $this->xprop );
+        return $output;
+        break;
+      case 'UNIQUE_ID':
+        if( empty( $this->unique_id ))
+          $this->unique_id  = gethostbyname( $_SERVER['SERVER_NAME'] );
+        return $this->unique_id;
+        break;
+    }
+  }
+/**
+ * general component config setting
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.22 - 2007-04-06
+ * @param string $config
+ * @param string $value
+ * @return void
+ */
+  function setConfig( $config, $value ) {
+    switch( strtoupper( $config )) {
+      case 'FORMAT':
+        $this->format = $value;
+        break;
+      case 'LANGUAGE':
+         // set language for calendar component as defined in [RFC 1766]
+        $this->language = $value;
+        break;
+      case 'NL':
+        $this->nl = $value;
+        break;
+      case 'UNIQUE_ID':
+        $this->unique_id = $value;
+        break;
+    }
+  }
+/*********************************************************************************/
+/**
+ * get component property value/params
+ *
+ * if property has multiply values, consequtive function calls are needed
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-24
+ * @param string $propName, optional
+ * @param int @propix, optional, if specific property is wanted in case of multiply occurences
+ * @param bool $inclParam=FALSE
+ * @return mixed
+ */
+  function getProperty( $propName=FALSE, $propix=FALSE, $inclParam=FALSE ) {
+    $propName = ( $propName ) ? strtoupper( $propName ) : 'X-PROP';
+    if( !$propix )
+      $propix = ( isset( $this->propix[$propName] )) ? $this->propix[$propName] + 2 : 1;
+    $this->propix[$propName] = --$propix;
+    switch( $propName ) {
+      case 'ACTION':
+        if(( 0 < $propix ) || !isset( $this->action['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->action : $this->action['value'];
+        break;
+      case 'ATTACH':
+        if( count( $this->attach ) <= $propix ) return FALSE;
+        return ( $inclParam ) ? $this->attach[$propix] : $this->attach[$propix]['value'];
+        break;
+      case 'ATTENDEE':
+        if( count( $this->attendee ) <= $propix ) return FALSE;
+        return ( $inclParam ) ? $this->attendee[$propix] : $this->attendee[$propix]['value'];
+        break;
+      case 'CATEGORIES':
+        if( count( $this->categories ) <= $propix ) return FALSE;
+        return ( $inclParam ) ? $this->categories[$propix] : $this->categories[$propix]['value'];
+        break;
+      case 'CLASS':
+        if(( 0 < $propix ) || !isset( $this->class['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->class : $this->class['value'];
+        break;
+      case 'COMMENT':
+        if( count( $this->comment ) <= $propix ) return FALSE;
+        return ( $inclParam ) ? $this->comment[$propix] : $this->comment[$propix]['value'];
+        break;
+      case 'COMPLETED':
+        if(( 0 < $propix ) || !isset( $this->completed['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->completed : $this->completed['value'];
+        break;
+      case 'CONTACT':
+        if( count( $this->contact ) <= $propix ) return FALSE;
+        return ( $inclParam ) ? $this->contact[$propix] : $this->contact[$propix]['value'];
+        break;
+      case 'CREATED':
+        if(( 0 < $propix ) || !isset( $this->created['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->created : $this->created['value'];
+        break;
+      case 'DESCRIPTION':
+        if( count( $this->description ) <= $propix ) return FALSE;
+        return ( $inclParam ) ? $this->description[$propix] : $this->description[$propix]['value'];
+        break;
+      case 'DTEND':
+        if(( 0 < $propix ) || !isset( $this->dtend['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->dtend : $this->dtend['value'];
+        break;
+      case 'DTSTAMP':
+        if( in_array( $this->objName, array( 'valarm', 'vtimezone' )))
+          return;
+        if( 0 < $propix )
+          return null;
+        if( !isset( $this->dtstamp['value'] ))
+          $this->_makeDtstamp();
+        return ( $inclParam ) ? $this->dtstamp : $this->dtstamp['value'];
+        break;
+      case 'DTSTART':
+        if(( 0 < $propix ) || !isset( $this->dtstart['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->dtstart : $this->dtstart['value'];
+        break;
+      case 'DUE':
+        if(( 0 < $propix ) || !isset( $this->due['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->due : $this->due['value'];
+        break;
+      case 'DURATION':
+        if(( 0 < $propix ) || !isset( $this->duration['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->duration : $this->duration['value'];
+        break;
+      case 'EXDATE':
+        if( count( $this->exdate ) <= $propix ) return FALSE;
+        return ( $inclParam ) ? $this->exdate[$propix] : $this->exdate[$propix]['value'];
+        break;
+      case 'EXRULE':
+        if( count( $this->exrule ) <= $propix ) return FALSE;
+        return ( $inclParam ) ? $this->exrule[$propix] : $this->exrule[$propix]['value'];
+        break;
+      case 'FREEBUSY':
+        if( count( $this->freebusy ) <= $propix ) return FALSE;
+        return ( $inclParam ) ? $this->freebusy[$propix] : $this->freebusy[$propix]['value'];
+        break;
+      case 'GEO':
+        if(( 0 < $propix ) || !isset( $this->geo['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->geo : $this->geo['value'];
+        break;
+      case 'LAST-MODIFIED':
+        if(( 0 < $propix ) || !isset( $this->lastmodified['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->lastmodified : $this->lastmodified['value'];
+        break;
+      case 'LOCATION':
+        if(( 0 < $propix ) || !isset( $this->location['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->location : $this->location['value'];
+        break;
+      case 'ORGANIZER':
+        if(( 0 < $propix ) || !isset( $this->organizer['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->organizer : $this->organizer['value'];
+        break;
+      case 'PERCENT-COMPLETE':
+        if(( 0 < $propix ) || !isset( $this->percentcomplete['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->percentcomplete : $this->percentcomplete['value'];
+        break;
+      case 'PRIORITY':
+        if(( 0 < $propix ) || !isset( $this->priority['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->priority : $this->priority['value'];
+        break;
+      case 'RDATE':
+        if( count( $this->rdate ) <= $propix ) return FALSE;
+        return ( $inclParam ) ? $this->rdate[$propix] : $this->rdate[$propix]['value'];
+        break;
+      case 'RECURRENCE-ID':
+        if(( 0 < $propix ) || !isset( $this->recurrenceid['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->recurrenceid : $this->recurrenceid['value'];
+        break;
+      case 'RELATED-TO':
+        if( count( $this->relatedto ) <= $propix ) return FALSE;
+        return ( $inclParam ) ? $this->relatedto[$propix] : $this->relatedto[$propix]['value'];
+        break;
+      case 'REPEAT':
+        if(( 0 < $propix ) || !isset( $this->repeat['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->repeat : $this->repeat['value'];
+        break;
+      case 'REQUEST-STATUS':
+        if( count( $this->requeststatus ) <= $propix ) return FALSE;
+        return ( $inclParam ) ? $this->requeststatus[$propix] : $this->requeststatus[$propix]['value'];
+        break;
+      case 'RESOURCES':
+        if( count( $this->resources ) <= $propix ) return FALSE;
+        return ( $inclParam ) ? $this->resources[$propix] : $this->resources[$propix]['value'];
+        break;
+      case 'RRULE':
+        if( count( $this->rrule ) <= $propix ) return FALSE;
+        return ( $inclParam ) ? $this->rrule[$propix] : $this->rrule[$propix]['value'];
+        break;
+      case 'SEQUENCE':
+        if(( 0 < $propix ) || !isset( $this->sequence['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->sequence : $this->sequence['value'];
+        break;
+      case 'STATUS':
+        if(( 0 < $propix ) || !isset( $this->status['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->status : $this->status['value'];
+        break;
+      case 'SUMMARY':
+        if(( 0 < $propix ) || !isset( $this->summary['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->summary : $this->summary['value'];
+        break;
+      case 'TRANSP':
+        if(( 0 < $propix ) || !isset( $this->transp['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->transp : $this->transp['value'];
+        break;
+      case 'TRIGGER':
+        if(( 0 < $propix ) || !isset( $this->trigger['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->trigger : $this->trigger['value'];
+        break;
+      case 'TZID':
+        if(( 0 < $propix ) || !isset( $this->tzid['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->tzid : $this->tzid['value'];
+        break;
+      case 'TZNAME':
+        if( count( $this->tzname ) <= $propix ) return FALSE;
+        return ( $inclParam ) ? $this->tzname[$propix] : $this->tzname[$propix]['value'];
+        break;
+      case 'TZOFFSETFROM':
+        if(( 0 < $propix ) || !isset( $this->tzoffsetfrom['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->tzoffsetfrom : $this->tzoffsetfrom['value'];
+        break;
+      case 'TZOFFSETTO':
+        if(( 0 < $propix ) || !isset( $this->tzoffsetto['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->tzoffsetto : $this->tzoffsetto['value'];
+        break;
+      case 'TZURL':
+        if(( 0 < $propix ) || !isset( $this->tzurl['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->tzurl : $this->tzurl['value'];
+        break;
+      case 'UID':
+        if( in_array( $this->objName, array( 'valarm', 'vtimezone' )))
+          return;
+        if( 0 < $propix )
+          return null;
+        if( empty( $this->uid['value'] ))
+          $this->_makeuid();
+        return ( $inclParam ) ? $this->uid : $this->uid['value'];
+        break;
+      case 'URL':
+        if(( 0 < $propix ) || !isset( $this->url['value'] )) return FALSE;
+        return ( $inclParam ) ? $this->url : $this->url['value'];
+        break;
+      default:
+        if( count( $this->xprop ) <= $propix ) return FALSE;
+        return ( $inclParam ) ? $this->xprop[$propix] : $this->xprop[$propix]['value'];
+        break;
+    }
+    return FALSE;
+  }
+/**
+ * general component property setting
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-04-25
+ * @param mixed $args variable number of function arguments,
+ *                    first argument is ALWAYS component name!
+ * @return void
+ */
+  function setProperty() {
+    $numargs    = func_num_args();
+    if( 1 > $numargs )
+      return FALSE;
+    $arglist    = func_get_args();
+    $arglist[0] = strtoupper( $arglist[0] );
+    for( $argix=$numargs; $argix < 12; $argix++ )
+      if( !isset( $arglist[$argix] ))
+        $arglist[$argix] = null;
+    switch( $arglist[0] ) {
+      case 'ACTION':
+        $this->setAction( $arglist[1], $arglist[2] );
+        break;
+      case 'ATTACH':
+        $this->setAttach( $arglist[1], $arglist[2] );
+        break;
+      case 'ATTENDEE':
+        $this->setAttendee( $arglist[1], $arglist[2] );
+        break;
+      case 'CATEGORIES':
+        $this->setCategories( $arglist[1], $arglist[2] );
+        break;
+      case 'CLASS':
+        $this->setClass( $arglist[1], $arglist[2] );
+        break;
+      case 'COMMENT':
+        $this->setComment( $arglist[1], $arglist[2] );
+        break;
+      case 'COMPLETED':
+        $this->setCompleted( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7] );
+        break;
+      case 'CONTACT':
+        $this->setContact( $arglist[1], $arglist[2] );
+        break;
+      case 'CREATED':
+        $this->setCreated( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7] );
+        break;
+      case 'DESCRIPTION':
+        $this->setDescription( $arglist[1], $arglist[2] );
+        break;
+      case 'DTEND':
+        $this->setDtend( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7], $arglist[8] );
+        break;
+      case 'DTSTAMP':
+        $this->setDtstamp( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7] );
+        break;
+      case 'DTSTART':
+        $this->setDtstart( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7], $arglist[8] );
+        break;
+      case 'DUE':
+        $this->setDue( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7], $arglist[8] );
+        break;
+      case 'DURATION':
+        $this->setDuration( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6] );
+        break;
+      case 'EXDATE':
+        $this->setExdate( $arglist[1], $arglist[2] );
+        break;
+      case 'EXRULE':
+        $this->setExrule( $arglist[1], $arglist[2] );
+        break;
+      case 'FREEBUSY':
+        $this->setFreebusy( $arglist[1], $arglist[2], $arglist[3] );
+        break;
+      case 'GEO':
+        $this->setGeo( $arglist[1], $arglist[2], $arglist[3] );
+        break;
+      case 'LAST-MODIFIED':
+        $this->setLastModified( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7] );
+        break;
+      case 'LOCATION':
+        $this->setLocation( $arglist[1], $arglist[2] );
+        break;
+      case 'ORGANIZER':
+        $this->setOrganizer( $arglist[1], $arglist[2] );
+        break;
+      case 'PERCENT-COMPLETE':
+        $this->setPercentComplete( $arglist[1], $arglist[2] );
+        break;
+      case 'PRIORITY':
+        $this->setPriority( $arglist[1], $arglist[2] );
+        break;
+      case 'RDATE':
+        $this->setRdate( $arglist[1], $arglist[2] );
+        break;
+      case 'RECURRENCE-ID':
+        $this->setRecurrenceid( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7], $arglist[8] );
+       break;
+      case 'RELATED-TO':
+        $this->setRelatedTo( $arglist[1], $arglist[2] );
+        break;
+      case 'REPEAT':
+        $this->setRepeat( $arglist[1], $arglist[2] );
+        break;
+      case 'REQUEST-STATUS':
+        $this->setRequestStatus( $arglist[1], $arglist[2], $arglist[3], $arglist[4] );
+        break;
+      case 'RESOURCES':
+        $this->setResources( $arglist[1], $arglist[2] );
+        break;
+      case 'RRULE':
+        $this->setRrule( $arglist[1], $arglist[2] );
+        break;
+      case 'SEQUENCE':
+        $this->setSequence( $arglist[1], $arglist[2] );
+        break;
+      case 'STATUS':
+        $this->setStatus( $arglist[1], $arglist[2] );
+        break;
+      case 'SUMMARY':
+        $this->setSummary( $arglist[1], $arglist[2] );
+        break;
+      case 'TRANSP':
+        $this->setTransp( $arglist[1], $arglist[2] );
+        break;$bodytag = str_replace("%body%", "black", "<body text=%body%>");
+      case 'TRIGGER':
+        $this->setTrigger( $arglist[1], $arglist[2], $arglist[3], $arglist[4], $arglist[5], $arglist[6], $arglist[7], $arglist[8], $arglist[9], $arglist[10], $arglist[11] );
+        break;
+      case 'TZID':
+        $this->setTzid( $arglist[1], $arglist[2] );
+        break;
+      case 'TZNAME':
+        $this->setTzname( $arglist[1], $arglist[2] );
+        break;
+      case 'TZOFFSETFROM':
+        $this->setTzoffsetfrom( $arglist[1], $arglist[2] );
+        break;
+      case 'TZOFFSETTO':
+        $this->setTzoffsetto( $arglist[1], $arglist[2] );
+        break;
+      case 'TZURL':
+        $this->setTzurl( $arglist[1], $arglist[2] );
+        break;
+      case 'UID':
+        $this->setUid( $arglist[1], $arglist[2] );
+        break;
+      case 'URL':
+        $this->setUrl( $arglist[1], $arglist[2] );
+        break;
+      default:
+        $this->setXprop( $arglist[0], $arglist[1], $arglist[2] );
+        break;
+    }
+  }
+/*********************************************************************************/
+/**
+ * parse component unparsed data into properties
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-04-27
+ * @return bool FALSE if error occurs during parsing
+ *
+ */
+  function parse() {
+    if( !is_array( $this->unparsed ) || ( 0 >= count( $this->unparsed )))
+      return FALSE;
+            /* concatenate property values spread over several lines */
+    $lastix    = -1;
+    $propnames = array( 'action', 'attach', 'attendee', 'categories', 'comment', 'completed'
+                      , 'contact', 'class', 'created', 'description', 'dtend', 'dtstart'
+                      , 'dtstamp', 'due', 'duration', 'exdate', 'exrule', 'freebusy', 'geo'
+                      , 'last-modified', 'location', 'organizer', 'percent-complete'
+                      , 'priority', 'rdate', 'recurrence-id', 'related-to', 'repeat'
+                      , 'request-status', 'resources', 'rrule', 'sequence', 'status'
+                      , 'summary', 'transp', 'trigger', 'tzid', 'tzname', 'tzoffsetfrom'
+                      , 'tzoffsetto', 'tzurl', 'uid', 'url', 'x-' );
+    $unparsed  = array();
+    foreach( $this->unparsed as $line ) {
+      $newProp = FALSE;
+      foreach ( $propnames as $propname ) {
+        if( $propname == strtolower( substr( $line, 0, strlen( $propname )))) {
+          $newProp = TRUE;
+          break;
+        }
+      }
+      if( $newProp ) {
+        $newProp = FALSE;
+        $lastix++;
+        $unparsed[$lastix]  = $line;
+      }
+      else {
+            /* remove line breaks */
+        if(( '\n' == substr( $unparsed[$lastix], - 2 )) &&
+           (  ' ' == substr( $line, 0, 1 ))) {
+          $unparsed[$lastix] = substr( $unparsed[$lastix], 0, strlen( $unparsed[$lastix] ) - 2 );
+          $line = substr( $line, 1 );
+        }
+        $unparsed[$lastix] .= $line;
+      }
+    }
+            /* parse each property 'line' */
+    foreach( $unparsed as $line ) {
+      if( '\n' == substr( $line, - 2 ))
+        $line = substr( $line, 0, strlen( $line ) - 2 );
+            /* get propname, (problem with x-properties, otherwise in previous loop) */
+      $cix = $propname = null;
+      for( $cix=0; $cix < strlen( $line ); $cix++ ) {
+        if( in_array( $line{$cix}, array( ':', ';' )))
+          break;
+        else
+          $propname .= $line{$cix};
+      }
+            /* rest of the line is opt.params and value */
+      $line = substr( $line, $cix);
+            /* separate attributes from value */
+      $attr   = array();
+      $attrix = -1;
+      for( $cix=0; $cix < strlen( $line ); $cix++ ) {
+        if((       ':'   == $line{$cix} ) &&
+           (       '://' != substr( $line, $cix, 3 )) &&
+           ( 'mailto:'   != strtolower( substr( $line, $cix - 6, 7 )))) {
+          $attrEnd = TRUE;
+          if( ctype_digit( $line{$cix+1} )) { // an URI with a portnr??
+            for( $c2ix = $cix; 3 < $c2ix; $c2ix-- ) {
+              if( '://' == substr( $line, $c2ix - 2, 3 )) {
+                $attrEnd = FALSE;
+                break; // an URI with a portnr!!
+              }
+            }
+          }
+          if( $attrEnd) {
+            $line = substr( $line, $cix + 1 );
+            break;
+          }
+        }
+        if( ';' == $line{$cix} )
+          $attr[++$attrix] = null;
+        else
+          $attr[$attrix] .= $line{$cix};
+      }
+            /* make attributes in array format */
+      $propattr = array();
+      foreach( $attr as $attribute ) {
+        $attrsplit = explode( '=', $attribute, 2 );
+        if( 1 < count( $attrsplit ))
+          $propattr[$attrsplit[0]] = $attrsplit[1];
+        else
+          $propattr[] = $attribute;
+      }
+            /* call setProperty( $propname.. . */
+      switch( $propname ) {
+        case 'ATTENDEE':
+          foreach( $propattr as $pix => $attr ) {
+            $attr2 = explode( ',', $attr );
+              if( 1 < count( $attr2 ))
+                $propattr[$pix] = $attr2;
+          }
+          $this->setProperty( $propname, $line, $propattr );
+          break;
+        case 'COMMENT':
+        case 'CONTACT':
+        case 'DESCRIPTION':
+        case 'LOCATION':
+        case 'SUMMARY':
+          $this->setProperty( $propname, $this->_strunrep( $line ), $propattr );
+          break;
+        case 'REQUEST-STATUS':
+          $values = explode( ';', $line );
+          if( !isset( $values[2] ))
+            $values[2] = FALSE;
+          $this->setProperty( $propname
+                            , $values[0]                     // statcode
+                            , $this->_strunrep( $values[1] ) // statdesc
+                            , $this->_strunrep( $values[2] ) // extdata
+                            , $propattr );
+          break;
+        case 'FREEBUSY':
+          $fbtype = $propattr['FBTYPE'];
+          unset( $propattr['FBTYPE'] );
+          $values = explode( ',', $line );
+          foreach( $values as $vix => $value ) {
+            $value2 = explode( '/', $value );
+            if( 1 < count( $value2 ))
+              $values[$vix] = $value2;
+          }
+          $this->setProperty( $propname, $fbtype, $values, $propattr );
+          break;
+        case 'GEO':
+          $value= explode( ';', $line, 2 );
+          $this->setProperty( $propname, $value[0], $value[1], $propattr );
+          break;
+        case 'EXDATE':
+          $values= explode( ',', $line );
+          $this->setProperty( $propname, $values, $propattr );
+          break;
+        case 'RDATE':
+          $values = explode( ',', $line );
+          foreach( $values as $vix => $value ) {
+            $value2 = explode( '/', $value );
+            if( 1 < count( $value2 ))
+              $values[$vix] = $value2;
+          }
+          $this->setProperty( $propname, $values, $propattr );
+          break;
+        case 'EXRULE':
+        case 'RRULE':
+          $values = explode( ';', $line );
+          $recur = array();
+          foreach( $values as $value2 ) {
+            $value3 = explode( '=', $value2, 2 );
+            $rulelabel = strtoupper( $value3[0] );
+            switch( $rulelabel ) {
+              case 'BYDAY': {
+                $value4 = explode( ',', $value3[1] );
+                if( 1 < count( $value4 )) {
+                  foreach( $value4 as $v5ix => $value5 ) {
+                    $value6 = array();
+                    $dayno = $dayname = null;
+                    if(( ctype_alpha( substr( $value5, -1 ))) &&
+                       ( ctype_alpha( substr( $value5, -2, 1 )))) {
+                      $dayname = substr( $value5, -2, 2 );
+                      if( 2 < strlen( $value5 ))
+                        $dayno = substr( $value5, 0, strlen( $value5 ) - 2 );
+                    }
+                    if( $dayno )
+                      $value6[] = $dayno;
+                    if( $dayname )
+                      $value6['DAY'] = $dayname;
+                    $value4[$v5ix] = $value6;
+                  }
+                }
+                else {
+                  $value4 = array();
+                  $dayno = $dayname = null;
+                  if(( ctype_alpha( substr( $value3[1], -1 ))) &&
+                     ( ctype_alpha( substr( $value3[1], -2, 1 )))) {
+                    $dayname = array( 'DAY' => substr( $value3[1], -2, 2 ));
+                    if( 2 < strlen( $value3[1] ))
+                      $dayno = substr( $value3[1], 0, strlen( $value3[1] ) - 2);
+                  }
+                  if( $dayno )
+                    $value4[] = $dayno;
+                  if( $dayname )
+                    $value4[] = $dayname;
+                }
+                $recur[$rulelabel] = $value4;
+                break;
+              }
+              default: {
+                $value4 = explode( ',', $value3[1] );
+                if( 1 < count( $value4 ))
+                  $value3[1] = $value4;
+                $recur[$rulelabel] = $value3[1];
+                break;
+              }
+            } // end - switch $rulelabel
+          } // end - foreach( $values.. .
+          $this->setProperty( $propname, $recur, $propattr );
+          break;
+        default:
+          $this->setProperty( $propname, $line, $propattr );
+          break;
+      } // end  switch( $propname.. .
+    } // end - foreach( $this->unparsed.. .
+    if( is_array( $this->subcomponents ) && ( 0 < count( $this->subcomponents ))) {
+      for( $six = 0; $six < count( $this->subcomponents ); $six++ )
+        $this->subcomponents[$six]->parse();
+    }
+  }
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * delete calendar subcomponent from component container
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-06
+ * @param mixed $arg1 ordno / component type / component uid
+ * @param mixed $arg2 optional, ordno if arg1 = component type
+ * @return void
+ */
+  function deleteComponent( $arg1, $arg2=FALSE  ) {
+    $argType = $index = null;
+    if ( is_int( $arg1 )) {
+      $argType = 'INDEX';
+      $index = --$arg1;
+    }
+    elseif(( strlen( $arg1 ) <= strlen( 'vfreebusy' )) && ( FALSE === strpos( $arg1, '@' ))) {
+      $argType = strtolower( $arg1 );
+      $index = ( is_int( $arg2 )) ? --$arg2 : 0;
+    }
+    $cix2dC = 0;
+    foreach ( $this->subcomponents as $cix => $component) {
+      unset( $component->propix );
+      if(( 'INDEX' == $argType ) && ( $index == $cix )) {
+        unset( $this->subcomponents[$cix] );
+        return TRUE;
+      }
+      elseif( $argType == $component->objName ) {
+        if( $index == $cix2dC ) {
+          unset( $this->subcomponents[$cix] );
+          return TRUE;
+        }
+        $cix2dC++;
+      }
+      elseif( !$argType && ($arg1 == $component->getProperty( 'uid' ))) {
+        unset( $this->subcomponents[$cix] );
+        return TRUE;
+      }
+    }
+    return FALSE;
+  }
+/**
+ * get calendar component subcomponent from component container
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-06
+ * @param mixed $arg1 optional, ordno/component type/ component uid
+ * @param mixed $arg2 optional, ordno if arg1 = component type
+ * @return object
+ */
+  function getComponent ( $arg1=FALSE, $arg2=FALSE ) {
+    $index = $argType = null;
+    if ( !$arg1 ) {
+      $argType = 'INDEX';
+      $index = $this->compix['INDEX'] =
+      ( isset( $this->compix[$argType] )) ? $this->compix[$argType] + 1 : 1;
+      $index = $index - 1;
+    }
+    elseif ( is_int( $arg1 )) {
+      $argType = 'INDEX';
+      $index = $arg1 - 1;
+      unset( $this->compix );
+    }
+    elseif(( strlen( $arg1 ) <= strlen( 'vfreebusy' )) && ( FALSE === strpos( $arg1, '@' ))) {
+      unset( $this->compix['INDEX'] );
+      $argType = strtolower( $arg1 );
+      if( !$arg2 )
+        $index = $this->compix[$argType] =
+        ( isset( $this->compix[$argType] )) ? $this->compix[$argType] + 1 : 1;
+      else
+        $index = $arg2;
+      $index = $index - 1;
+    }
+    if( isset( $index) && ( $index > end( array_keys( $this->subcomponents ))))
+      return FALSE;
+    $cix2gC = 0;
+    foreach ( $this->subcomponents as $cix => $component ) {
+      unset( $component->propix );
+      if(( 'INDEX' == $argType ) && ( $index == $cix ))
+        return $component;
+      elseif( $argType == $component->objName ) {
+         if( $index == $cix2gC )
+           return $component;
+         $cix2gC++;
+      }
+      elseif( !$argType && ( $arg1 == $component->getProperty( 'uid' ))) {
+        unset( $component->propix );
+        return $component;
+      }
+    }
+            /* not found.. . */
+    unset( $this->compix );
+    return false;
+  }
+/**
+ * add calendar component as subcomponent to container for subcomponents
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-04-24
+ * @param object $component calendar component
+ * @return void
+ */
+  function addSubComponent ( $component ) {
+    $this->setComponent( $component );
+  }
+/**
+ * add calendar component as subcomponent to container for subcomponents
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-04-24
+ * @param object $component calendar component
+ * @param mixed $arg1 optional, ordno/component type/ component uid
+ * @param mixed $arg2 optional, ordno if arg1 = component type
+ * @return void
+ */
+  function setComponent ( $component, $arg1=FALSE, $arg2=FALSE  ) {
+    if( '' >= $component->getConfig( 'language'))
+      $component->setConfig( 'language' ,  $this->getConfig( 'language' ));
+    $component->setConfig( 'nl' ,          $this->getConfig( 'nl' ));
+    $component->setConfig( 'unique_id' ,   $this->getConfig( 'unique_id' ));
+    $component->setConfig( 'format' ,      $this->getConfig( 'format' ));
+    if( !in_array( $component->objName, array( 'valarm', 'vtimezone' ))) {
+      unset( $component->propix );
+            /* make sure dtstamp and uid is set */
+      $dummy = $component->getProperty( 'dtstamp' );
+      $dummy = $component->getProperty( 'uid' );
+    }
+    if( !$arg1 ) {
+      $this->subcomponents[] = $component;
+      return TRUE;
+    }
+    $argType = $index = null;
+    if ( is_int( $arg1 )) {
+      $argType = 'INDEX';
+      $index = --$arg1;
+    }
+    elseif(( strlen( $arg1 ) <= strlen( 'vfreebusy' )) && ( FALSE === strpos( $arg1, '@' ))) {
+      $argType = strtolower( $arg1 );
+      $index = ( is_int( $arg2 )) ? --$arg2 : 0;
+    }
+    $cix2sC = 0;
+    foreach ( $this->subcomponents as $cix => $subcomponent ) {
+      unset( $subcomponent->propix );
+      if(( 'INDEX' == $argType ) && ( $index == $cix )) {
+        $this->subcomponents[$cix] = $component;
+        return TRUE;
+      }
+      elseif( $argType == $subcomponent->objName ) {
+        if( $index == $cix2sC ) {
+          $this->subcomponents[$cix] = $component;
+          return TRUE;
+        }
+        $cix2sC++;
+      }
+      elseif( !$argType && ($arg1 == $subcomponent2->getProperty( 'uid' ))) {
+        $this->subcomponents[$cix] = $component;
+        return TRUE;
+      }
+    }
+            /* not found.. . insert anyway.. .*/
+    $this->subcomponents[] = $component;
+  }
+/**
+ * creates formatted output for subcomponents
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.22 - 2007-04-07
+ * @return string
+ */
+  function createSubComponent() {
+    $subcomponents = null;
+    foreach( $this->subcomponents as $component ) {
+      if( '' >= $component->getConfig( 'language'))
+        $component->setConfig( 'language',  $this->getConfig( 'language' ));
+      $component->setConfig( 'nl',          $this->getConfig( 'nl' ));
+      $component->setConfig( 'unique_id',   $this->getConfig( 'unique_id' ));
+      $component->setConfig( 'format',      $this->getConfig( 'format' ));
+      $subcomponents .= $component->createComponent( $this->xcaldecl );
+    }
+    return $subcomponents;
+  }
+/********************************************************************************/
+/**
+ * break lines at pos 75
+ *
+ * Lines of text SHOULD NOT be longer than 75 octets, excluding the line
+ * break. Long content lines SHOULD be split into a multiple line
+ * representations using a line "folding" technique. That is, a long
+ * line can be split between any two characters by inserting a CRLF
+ * immediately followed by a single linear white space character (i.e.,
+ * SPACE, US-ASCII decimal 32 or HTAB, US-ASCII decimal 9). Any sequence
+ * of CRLF followed immediately by a single linear white space character
+ * is ignored (i.e., removed) when processing the content type.
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-10
+ * @param string $value
+ * @return string
+ */
+  function _size75( $string ) {
+    $strlen = strlen( $string );
+    $tmp    = $string;
+    $string = null;
+    while( $strlen > 75 ) {
+      $string .= substr( $tmp, 0, 75 );
+      $string .= $this->nl;
+      $tmp     = ' '.substr( $tmp, 75 );
+      $strlen  = strlen( $tmp );
+    }
+    $string .= rtrim( $tmp ); // the rest
+    if( $this->nl != substr( $string, ( 0 - strlen( $this->nl ))))
+      $string .= $this->nl;
+    return $string;
+  }
+/**
+ * special characters management output
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.12 - 2006-12-21
+ * @param string $string
+ * @return string
+ */
+  function _strrep( $string ) {
+    switch( $this->format ) {
+      case 'xcal':
+        $string = htmlspecialchars( strip_tags( stripslashes( urldecode ( $string ))));
+        break;
+      default:
+        $string = str_replace('"',        "'",    $string);
+        $string = str_replace('\\',       '\\\\', $string);
+        $string = str_replace(',',        '\,',   $string);
+        $string = str_replace(';',        '\;',   $string);
+        $string = str_replace( $this->nl, '\n',   $string);
+        break;
+    }
+    return $string;
+  }
+/**
+ * special characters management input (from iCal file)
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-04-27
+ * @param string $string
+ * @return string
+ */
+  function _strunrep( $string ) {
+    $string = str_replace( '\\\\', '\\',     $string);
+    $string = str_replace( '\,',   ',',      $string);
+    $string = str_replace( '\;',   ';',      $string);
+    $string = str_replace( '\n',  $this->nl, $string); // ??
+    return $string;
+  }
+}
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * class for calendar component VEVENT
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-10
+ */
+class vevent extends calendarComponent {
+/**
+ * constructor for calendar component VEVENT object
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-10
+ * @return void
+ */
+  function vevent() {
+    $this->calendarComponent();
+  }
+/**
+ * create formatted output for calendar component VEVENT object instance
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-24
+ * @param array $xcaldecl
+ * @return string
+ */
+  function createComponent( &$xcaldecl ) {
+    $this->_createFormat();
+    $component     = $this->componentStart1.$this->objName.$this->componentStart2.$this->nl;
+    $component    .= $this->createAttach();
+    $component    .= $this->createAttendee();
+    $component    .= $this->createCategories();
+    $component    .= $this->createComment();
+    $component    .= $this->createContact();
+    $component    .= $this->createClass();
+    $component    .= $this->createCreated();
+    $component    .= $this->createDescription();
+    $component    .= $this->createDtend();
+    $component    .= $this->createDtstamp();
+    $component    .= $this->createDtstart();
+    $component    .= $this->createDuration();
+    $component    .= $this->createExdate();
+    $component    .= $this->createExrule();
+    $component    .= $this->createGeo();
+    $component    .= $this->createLastModified();
+    $component    .= $this->createLocation();
+    $component    .= $this->createOrganizer();
+    $component    .= $this->createPriority();
+    $component    .= $this->createRdate();
+    $component    .= $this->createRelatedTo();
+    $component    .= $this->createRequestStatus();
+    $component    .= $this->createRecurrenceid();
+    $component    .= $this->createResources();
+    $component    .= $this->createRrule();
+    $component    .= $this->createSequence();
+    $component    .= $this->createStatus();
+    $component    .= $this->createSummary();
+    $component    .= $this->createTransp();
+    $component    .= $this->createUid();
+    $component    .= $this->createUrl();
+    $component    .= $this->createXprop();
+    if( $this->nl != substr( $component, ( 0 - strlen( $this->nl ))))
+      $component  .= $this->nl;
+    $component    .= $this->createSubComponent();
+    $component    .= $this->componentEnd1.$this->objName.$this->componentEnd2;
+    if( is_array( $this->xcaldecl ) && ( 0 < count( $this->xcaldecl ))) {
+      foreach( $this->xcaldecl as $localxcaldecl )
+        $xcaldecl[] = $localxcaldecl;
+    }
+    return $component;
+  }
+}
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * class for calendar component VTODO
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-10
+ */
+class vtodo extends calendarComponent {
+/**
+ * constructor for calendar component VTODO object
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-10
+ * @return void
+ */
+  function vtodo() {
+    $this->calendarComponent();
+  }
+/**
+ * create formatted output for calendar component VTODO object instance
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-24
+ * @param array $xcaldecl
+ * @return string
+ */
+  function createComponent( &$xcaldecl ) {
+    $this->_createFormat();
+    $component     = $this->componentStart1.$this->objName.$this->componentStart2.$this->nl;
+    $component    .= $this->createAttach();
+    $component    .= $this->createAttendee();
+    $component    .= $this->createCategories();
+    $component    .= $this->createClass();
+    $component    .= $this->createComment();
+    $component    .= $this->createCompleted();
+    $component    .= $this->createContact();
+    $component    .= $this->createCreated();
+    $component    .= $this->createDescription();
+    $component    .= $this->createDtstamp();
+    $component    .= $this->createDtstart();
+    $component    .= $this->createDue();
+    $component    .= $this->createDuration();
+    $component    .= $this->createExdate();
+    $component    .= $this->createExrule();
+    $component    .= $this->createGeo();
+    $component    .= $this->createLastModified();
+    $component    .= $this->createLocation();
+    $component    .= $this->createOrganizer();
+    $component    .= $this->createPercentComplete();
+    $component    .= $this->createPriority();
+    $component    .= $this->createRdate();
+    $component    .= $this->createRelatedTo();
+    $component    .= $this->createRequestStatus();
+    $component    .= $this->createRecurrenceid();
+    $component    .= $this->createResources();
+    $component    .= $this->createRrule();
+    $component    .= $this->createSequence();
+    $component    .= $this->createStatus();
+    $component    .= $this->createSummary();
+    $component    .= $this->createUid();
+    $component    .= $this->createUrl();
+    $component    .= $this->createXprop();
+    if( $this->nl != substr( $component, ( 0 - strlen( $this->nl ))))
+      $component  .= $this->nl;
+    $component    .= $this->createSubComponent();
+    $component    .= $this->componentEnd1.$this->objName.$this->componentEnd2;
+    if( is_array( $this->xcaldecl ) && ( 0 < count( $this->xcaldecl ))) {
+      foreach( $this->xcaldecl as $localxcaldecl )
+        $xcaldecl[] = $localxcaldecl;
+    }
+    return $component;
+  }
+}
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * class for calendar component VJOURNAL
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-10
+ */
+class vjournal extends calendarComponent {
+/**
+ * constructor for calendar component VJOURNAL object
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-10
+ * @return void
+ */
+  function vjournal() {
+    $this->calendarComponent();
+  }
+/**
+ * create formatted output for calendar component VJOURNAL object instance
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 1.x.x - 2007-05-24
+ * @param array $xcaldecl
+ * @return string
+ */
+  function createComponent( &$xcaldecl ) {
+    $this->_createFormat();
+    $component  = $this->componentStart1.$this->objName.$this->componentStart2.$this->nl;
+    $component .= $this->createAttach();
+    $component .= $this->createAttendee();
+    $component .= $this->createCategories();
+    $component .= $this->createClass();
+    $component .= $this->createComment();
+    $component .= $this->createContact();
+    $component .= $this->createCreated();
+    $component .= $this->createDescription();
+    $component .= $this->createDtstamp();
+    $component .= $this->createDtstart();
+    $component .= $this->createExdate();
+    $component .= $this->createExrule();
+    $component .= $this->createLastModified();
+    $component .= $this->createOrganizer();
+    $component .= $this->createRdate();
+    $component .= $this->createRequestStatus();
+    $component .= $this->createRecurrenceid();
+    $component .= $this->createRelatedTo();
+    $component .= $this->createRrule();
+    $component .= $this->createSequence();
+    $component .= $this->createStatus();
+    $component .= $this->createSummary();
+    $component .= $this->createUid();
+    $component .= $this->createUrl();
+    $component .= $this->createXprop();
+    $component .= $this->componentEnd1.$this->objName.$this->componentEnd2;
+    if( is_array( $this->xcaldecl ) && ( 0 < count( $this->xcaldecl ))) {
+      foreach( $this->xcaldecl as $localxcaldecl )
+        $xcaldecl[] = $localxcaldecl;
+    }
+    return $component;
+  }
+}
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * class for calendar component VFREEBUSY
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.7.3 - 2006-09-09
+ */
+class vfreebusy extends calendarComponent {
+/**
+ * constructor for calendar component VFREEBUSY object
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.7.3 - 2006-09-09
+ * @return void
+ */
+  function vfreebusy() {
+    $this->calendarComponent();
+  }
+/**
+ * create formatted output for calendar component VFREEBUSY object instance
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @param array $xcaldecl
+ * @return string
+ */
+  function createComponent( &$xcaldecl ) {
+    $this->_createFormat();
+    $component  = $this->componentStart1.$this->objName.$this->componentStart2.$this->nl;
+    $component .= $this->createAttendee();
+    $component .= $this->createComment();
+    $component .= $this->createContact();
+    $component .= $this->createDtend();
+    $component .= $this->createDtstart();
+    $component .= $this->createDtstamp();
+    $component .= $this->createDuration();
+    $component .= $this->createFreebusy();
+    $component .= $this->createOrganizer();
+    $component .= $this->createRequestStatus();
+    $component .= $this->createUid();
+    $component .= $this->createUrl();
+    $component .= $this->createXprop();
+    $component .= $this->componentEnd1.$this->objName.$this->componentEnd2;
+    if( is_array( $this->xcaldecl ) && ( 0 < count( $this->xcaldecl ))) {
+      foreach( $this->xcaldecl as $localxcaldecl )
+        $xcaldecl[] = $localxcaldecl;
+    }
+    return $component;
+  }
+}
+/*********************************************************************************/
+/*********************************************************************************/
+/**
+ * class for calendar component VALARM
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-10
+ */
+class valarm extends calendarComponent {
+/**
+ * constructor for calendar component VALARM object
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-10
+ * @return void
+ */
+  function valarm() {
+    $this->calendarComponent();
+  }
+/**
+ * create formatted output for calendar component VALARM object instance
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.10 - 2006-12-13
+ * @param array $xcaldecl
+ * @return string
+ */
+  function createComponent( &$xcaldecl ) {
+    $this->_createFormat();
+    $component     = $this->componentStart1.$this->objName.$this->componentStart2.$this->nl;
+    $component    .= $this->createAction();
+    $component    .= $this->createAttach();
+    $component    .= $this->createAttendee();
+    $component    .= $this->createDescription();
+    $component    .= $this->createDuration();
+    $component    .= $this->createRepeat();
+    $component    .= $this->createSummary();
+    $component    .= $this->createTrigger();
+    $component    .= $this->createXprop();
+    $component    .= $this->componentEnd1.$this->objName.$this->componentEnd2;
+    if( is_array( $this->xcaldecl ) && ( 0 < count( $this->xcaldecl ))) {
+      foreach( $this->xcaldecl as $localxcaldecl )
+        $xcaldecl[] = $localxcaldecl;
+    }
+    return $component;
+  }
+}
+/**********************************************************************************
+/*********************************************************************************/
+/**
+ * class for calendar component VTIMEZONE
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-13
+ */
+class vtimezone extends calendarComponent {
+  var $timezonetype;
+/**
+ * constructor for calendar component VTIMEZONE object
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.3.0 - 2006-08-13
+ * @param string $timezonetype optional, default FALSE ( STANDARD / DAYLIGHT )
+ * @return void
+ */
+  function vtimezone( $timezonetype=FALSE ) {
+    $this->calendarComponent();
+    if( !$timezonetype )
+      $this->timezonetype = 'VTIMEZONE';
+    else
+      $this->timezonetype = strtoupper( $timezonetype );
+  }
+/**
+ * create formatted output for calendar component VTIMEZONE object instance
+ *
+ * @author Kjell-Inge Gustafsson <[email protected]>
+ * @since 0.9.7 - 2006-11-20
+ * @param array $xcaldecl
+ * @return string
+ */
+  function createComponent( &$xcaldecl ) {
+    $this->_createFormat();
+    $component     = $this->componentStart1.$this->objName.$this->componentStart2.$this->nl;
+    $component    .= $this->createTzid();
+    $component    .= $this->createLastModified();
+    $component    .= $this->createTzurl();
+    $component    .= $this->createDtstart( TRUE );
+    $component    .= $this->createTzoffsetfrom();
+    $component    .= $this->createTzoffsetto();
+    $component    .= $this->createComment();
+    $component    .= $this->createRdate( TRUE );
+    $component    .= $this->createRrule();
+    $component    .= $this->createTzname();
+    $component    .= $this->createXprop();
+    if( $this->nl != substr( $component, ( 0 - strlen( $this->nl ))))
+      $component  .= $this->nl;
+    $component    .= $this->createSubComponent();
+    $component    .= $this->componentEnd1.$this->objName.$this->componentEnd2;
+    if( is_array( $this->xcaldecl ) && ( 0 < count( $this->xcaldecl ))) {
+      foreach( $this->xcaldecl as $localxcaldecl )
+        $xcaldecl[] = $localxcaldecl;
+    }
+    return $component;
+  }
+}
+?>
\ No newline at end of file


Property changes on: prosistem/alba/trunk/alba/apps/principal/lib/iCalcreator/iCalcreator.class.php
___________________________________________________________________
Name: svn:executable
   + *
Name: svn:keywords
   + "Id Author URL Date Rev"

Modified: prosistem/alba/trunk/alba/apps/principal/lib/miEvento.class.php
===================================================================
--- prosistem/alba/trunk/alba/apps/principal/lib/miEvento.class.php	2007-05-30 18:11:50 UTC (rev 4653)
+++ prosistem/alba/trunk/alba/apps/principal/lib/miEvento.class.php	2007-05-30 18:53:43 UTC (rev 4654)
@@ -1,5 +1,34 @@
 <?php
+/**
+ *    This file is part of Alba.
+ *
+ *    Alba is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    Alba is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with Alba; if not, write to the Free Software
+ *    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
 
+/**
+ *  Clase para manejo de Evento
+ *
+ * @package miEvento
+ * @author     José Luis Di Biase <[email protected]>
+ * @author     Héctor Sanchez <[email protected]>
+ * @author     Fernando Toledo <[email protected]>
+ * @version    SVN: $Id: actions.class.php 4566 2007-04-25 15:07:43Z josx $
+ * @filesource
+ * @license GPL
+ */
+
 class miEvento extends sfWebRequest
 {
 
@@ -149,8 +178,8 @@
                                 break;
                     case '1':   $evento_obj->setRecurrenciaFin($evento['recurrencia_fin_repeticion']);
                                 break;
-                    case '2':   $dateFormat = new sfDateFormat($this->getUser()->getCulture());
-                                $value = $dateFormat->format($evento['recurrencia_fin_fecha']." 00:00:00", 'I', $dateFormat->getInputPattern('g'));
+                    case '2':   $dateFormat = new sfDateFormat($cultura);
+                                $value = $dateFormat->format($evento['recurrencia_fin_fecha']." 00:00", 'I', $dateFormat->getInputPattern('g'));
                                 $evento_obj->setRecurrenciaFin($value);
                                 break; 
                 }

Added: prosistem/alba/trunk/alba/apps/principal/lib/miExportadorIcal.class.php
===================================================================
--- prosistem/alba/trunk/alba/apps/principal/lib/miExportadorIcal.class.php	2007-05-30 18:11:50 UTC (rev 4653)
+++ prosistem/alba/trunk/alba/apps/principal/lib/miExportadorIcal.class.php	2007-05-30 18:53:43 UTC (rev 4654)
@@ -0,0 +1,93 @@
+<?php
+/**
+ *    This file is part of Alba.
+ *
+ *    Alba is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    Alba is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with Alba; if not, write to the Free Software
+ *    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/**
+ *  Clase para manejo de exportacion a ical
+ *
+ * @package miEvento
+ * @author     José Luis Di Biase <[email protected]>
+ * @author     Héctor Sanchez <[email protected]>
+ * @author     Fernando Toledo <[email protected]>
+ * @version    SVN: $Id: actions.class.php 4566 2007-04-25 15:07:43Z josx $
+ * @filesource
+ * @license GPL
+ */
+
+include "iCalcreator/iCalcreator.class.php";
+
+class miExportadorIcal extends sfWebRequest {
+
+    var $aFreq = array ( '', 'SECONDLY', 'MINUTELY' , 'HOURLY', 'DAILY' ,'WEEKLY', 'MONTHLY', 'YEARLY');
+    var $aDias = array ( 'SA', 'FR', 'TH', 'WE', 'TU', 'MO', 'SU');
+
+    function exportar($aObj = array() ) {
+        if(is_array($aObj)) {
+            $v = new vcalendar();
+            $v->setConfig('DIRECTORY',sfConfig::get('sf_upload_dir_name')); //sfConfig::get('app_alba_tmpdir');
+
+            foreach ($aObj as $rel_division_actividad_docente) {
+                if($rel_division_actividad_docente->getEvento()) {
+                    $e = new vevent();
+                    $e->setProperty( 'DESCRIPTION', 'Horas de maestro/profesor' );
+                    $e->setProperty('SUMMARY', $rel_division_actividad_docente->getDivision()."-".$rel_division_actividad_docente->getActividad()."-".$rel_division_actividad_docente->getDocente());
+                    $e->setProperty('class', 'PUBLIC');
+                    $aFechaInicio = getdate(strtotime($rel_division_actividad_docente->getEvento()->getFechaInicio()));
+                    $e->setProperty('dtstart', $aFechaInicio['year'], $aFechaInicio['mon'],$aFechaInicio['mday'], $aFechaInicio['hours'], $aFechaInicio['minutes'], 0);
+                    $aFechaFin = getdate(strtotime($rel_division_actividad_docente->getEvento()->getFechaFin()));
+                    $e->setProperty('dtend', $aFechaFin['year'], $aFechaFin['mon'],$aFechaFin['mday'], $aFechaFin['hours'], $aFechaFin['minutes'], 0);
+
+//                 $segundos = strtotime($rel_division_actividad_docente->getEvento()->getFechaFin())-strtotime($rel_division_actividad_docente->getEvento()->getFechaInicio());
+//                 $horas = floor($segundos / 3600);
+//                 $minutos = floor(($segundos - ($horas * 3600)) / 60);
+//                 $segundos = $segundos - ($horas * 60) - ($minutos * 60);
+//                 $e->setProperty('DURATION', '','', $horas, $minutos);
+                    $e->setProperty('dtstamp', gmdate('Ymd\THi00\Z'));
+
+                    if($rel_division_actividad_docente->getEvento()->getFrecuencia()) {
+                        $freq = $this->aFreq[$rel_division_actividad_docente->getEvento()->getFrecuencia()];
+                        $interval = $rel_division_actividad_docente->getEvento()->getFrecuenciaIntervalo();
+
+                        $aRrule = array();
+                        $aRrule['FREQ'] = $freq;
+                        $aRrule['INTERVAL'] = $interval;
+
+                        if($freq == "WEEKLY") {
+                            $aRrule['BYDAY'] = array_chunk(explode ( ",", $rel_division_actividad_docente->getEvento()->getRecurrenciaDiasIcal()),1);
+                        }
+
+                        if($rel_division_actividad_docente->getEvento()->getRecurrenciaFin() != "") {
+                            if(is_numeric($rel_division_actividad_docente->getEvento()->getRecurrenciaFin())) {
+                                $aRrule['COUNT'] = $rel_division_actividad_docente->getEvento()->getRecurrenciaFin();
+                            } else {
+                                $aRrule['UNTIL'] = gmdate('Ymd\THi00\Z',strtotime($rel_division_actividad_docente->getEvento()->getRecurrenciaFin()));
+                            }
+                        }
+                        $e->setProperty( 'rrule' , $aRrule);
+                    }
+                    $v->addComponent($e);	
+                }
+            }
+            $v->returnCalendar();
+        } else {
+            $error = 'No envío un array para la exportación';
+            throw new Exception($error);
+        }
+    }
+}
+?>
\ No newline at end of file


Property changes on: prosistem/alba/trunk/alba/apps/principal/lib/miExportadorIcal.class.php
___________________________________________________________________
Name: svn:keywords
   + "Id Author URL Date Rev"

Modified: prosistem/alba/trunk/alba/apps/principal/modules/evento/templates/_carga_evento.php
===================================================================
--- prosistem/alba/trunk/alba/apps/principal/modules/evento/templates/_carga_evento.php	2007-05-30 18:11:50 UTC (rev 4653)
+++ prosistem/alba/trunk/alba/apps/principal/modules/evento/templates/_carga_evento.php	2007-05-30 18:53:43 UTC (rev 4654)
@@ -39,9 +39,9 @@
                 $recurrencia_fin_2 = $recurrencia_fin_0 = false;
                 $recurrencia_fin_1 = true;
             } else {
-                $dateFormat = new sfDateFormat($sf_user->getCulture());
-                $value = $dateFormat->format($evento->getRecurrenciaFin()." 00:00:00", 'I', $dateFormat->getInputPattern('g'));
-
+//                 $dateFormat = new sfDateFormat($sf_user->getCulture());
+//                 $value = $dateFormat->format($evento->getRecurrenciaFin()." 00:00:00", 'I', $dateFormat->getInputPattern('g'));
+                $value = $evento->getRecurrenciaFin();
                 $recurrencia_fin_fecha  = $value;
                 $recurrencia_fin_repeticion = '';            
                 $recurrencia_fin_2 = true;

Modified: prosistem/alba/trunk/alba/apps/principal/modules/relDivisionActividadDocente/actions/actions.class.php
===================================================================
--- prosistem/alba/trunk/alba/apps/principal/modules/relDivisionActividadDocente/actions/actions.class.php	2007-05-30 18:11:50 UTC (rev 4653)
+++ prosistem/alba/trunk/alba/apps/principal/modules/relDivisionActividadDocente/actions/actions.class.php	2007-05-30 18:53:43 UTC (rev 4654)
@@ -32,181 +32,6 @@
  */
 class relDivisionActividadDocenteActions extends autorelDivisionActividadDocenteActions
 {
-/*
-    protected function updateEventoFromRequest($evento_obj) {
-        $evento = $this->getRequestParameter('evento');
-      
-        if (isset($evento['fecha_inicio'])) {
-            if ($evento['fecha_inicio']) {
-                try {
-                    $dateFormat = new sfDateFormat($this->getUser()->getCulture());
-                    if(!is_array($evento['fecha_inicio'])) {
-
-                        if(isset($evento['hora_asociada']) AND $evento['hora_asociada'] == 1) {
-                            if($evento['hora_inicio']) {
-                                $evento['hora_inicio']['hour'] = ($evento['hora_inicio']['hour'] != "12" AND $evento['hora_inicio']['ampm'] == "PM")?$evento['hora_inicio']['hour'] + 12:$evento['hora_inicio']['hour'];
-                                $evento['hora_inicio']['hour'] = ($evento['hora_inicio']['hour'] == "12" AND $evento['hora_inicio']['ampm'] == "AM")?"00":$evento['hora_inicio']['hour'];
-                                $evento['fecha_inicio'] .= " ".$evento['hora_inicio']['hour'].":".$evento['hora_inicio']['minute'];
-                            } else {
-                                $evento['fecha_inicio'] .= " 00:00:00";
-                            }
-                        } else {
-                            $evento['fecha_inicio'] .= " 00:00:00";
-                        }
-
-                        $value = $dateFormat->format($evento['fecha_inicio'], 'I', $dateFormat->getInputPattern('g'));
-
-                    } else {
-                        $value_array = $evento['fecha_inicio'];
-                        
-                        $value_array['hour']['hour'] = "00";
-                        $value_array['hour']['minute'] = "00";
-                        $value_array['hour']['second'] = "00";
-                        if($evento['hora_asociada'] == 1) {
-                            if($evento['hora_inicio']) {
-                                $value_array['hour'] = $evento['hora_inicio']['hour'];
-                                $value_array['minute'] = $evento['hora_inicio']['minute'];
-                                $value_array['ampm'] = $evento['hora_inicio']['ampm'];
-                            }
-                        } 
-
-                        $value = $value_array['year'].'-'.$value_array['month'].'-'.$value_array['day'].(isset($value_array['hour']) ? ' '.$value_array['hour'].':'.$value_array['minute'].(isset($value_array['second']) ? ':'.$value_array['second'] : '') : '');
-                    }
-
-                    $evento_obj->setFechaInicio($value);
-                }
-                catch (sfException $e) {
-                // not a date
-                }
-            } else {
-                $evento_obj->setFechaInicio(null);
-            }
-        }
-
-        if (isset($evento['fecha_fin'])) {
-            if ($evento['fecha_fin']) {
-                try {
-                    $dateFormat = new sfDateFormat($this->getUser()->getCulture());
-                    if (!is_array($evento['fecha_fin'])) {
-
-                        if(isset($evento['hora_asociada']) AND $evento['hora_asociada'] == 1) {
-                            if($evento['hora_fin']) {
-                                $evento['hora_fin']['hour'] = ($evento['hora_fin']['hour'] != "12" AND $evento['hora_fin']['ampm'] == "PM")?$evento['hora_fin']['hour'] + 12:$evento['hora_fin']['hour'];
-                                $evento['hora_fin']['hour'] = ($evento['hora_fin']['hour'] == "12" AND $evento['hora_fin']['ampm'] == "AM")?"00":$evento['hora_fin']['hour'];
-
-                                $evento['fecha_fin'] .= " ".$evento['hora_fin']['hour'].":".$evento['hora_fin']['minute'];
-                            } else {
-                                $evento['fecha_fin'] .= " 00:00:00";
-                            }
-                        } else {
-                            $evento['fecha_fin'] .= " 00:00:00";
-                        }
-
-                        $value = $dateFormat->format($evento['fecha_fin'], 'I', $dateFormat->getInputPattern('g'));
-
-                    } else {
-                        $value_array = $evento['fecha_fin'];
-
-                        $value_array['hour']['hour'] = "00";
-                        $value_array['hour']['minute'] = "00";
-                        $value_array['hour']['second'] = "00";
-                        if($evento['hora_asociada'] == 1) {
-                            if($evento['hora_fin']) {
-                                $value_array['hour'] = $evento['hora_fin']['hour'];
-                                $value_array['minute'] = $evento['hora_fin']['minute'];
-                                $value_array['ampm'] = $evento['hora_inicio']['ampm'];
-                            }
-                        } 
-
-                        $value = $value_array['year'].'-'.$value_array['month'].'-'.$value_array['day'].(isset($value_array['hour']) ? ' '.$value_array['hour'].':'.$value_array['minute'].(isset($value_array['second']) ? ':'.$value_array['second'] : '') : '');
-                    }
-                    $evento_obj->setFechaFin($value);
-                }
-                catch (sfException $e) {
-                // not a date
-                }
-            } else {
-                $evento_obj->setFechaFin(null);
-            }
-        }
-
-
-        if(isset($evento['titulo'])) {
-            $evento_obj->setTitulo($evento['titulo']);
-        }
-        
-
-        if(isset($evento['tipo'])) {
-            $evento_obj->setTipo($evento['titulo']);
-        } else {
-            $evento_obj->setTipo(1); //  (0 = PRIVATE | 1 = PUBLIC | 2 = CONFIDENTIAL)
-        }
-
-        if(isset($evento['estado'])) {
-            $evento_obj->setEstado($evento['estado']);
-        } else {
-            $evento_obj->setEstado(1);  // (0 = TENTATIVE, 1 = CONFIRMED, 2 = CANCELLED)
-        }
-
-
-
-
-        if(isset($evento['activar_repeticion']) AND $evento['activar_repeticion'] == 1) {
-            if(isset($evento['frecuencia']) AND is_array($evento['frecuencia']) ) {
-                $evento_obj->setFrecuencia($evento['frecuencia'][0]);
-                
-                switch($evento['frecuencia'][0]) { // dia: 4, semana: 5, mes: 6, año: 7
-                    case '4':  $evento_obj->setFrecuenciaIntervalo($evento['frecuencia_intervalo_diaria']);
-                               break;
-                    case '5':  $evento_obj->setFrecuenciaIntervalo($evento['frecuencia_intervalo_semana']);
-                               $aSemanaBinario = array ( 1, 2, 4, 8, 16, 32, 64 );
-                               $suma_total = 0;
-                               foreach($evento['recurrencia_dias'] as $dia) {
-                                    $suma_total += $aSemanaBinario[$dia];
-                               }
-                                // guardamos en binario para saber todos los dias de la semana seleccionados
-                               $evento_obj->setRecurrenciaDias($suma_total); 
-                               break;
-                    case '6':  break;
-                    case '7':  break;
-                }
-            }
-            
-            if(isset($evento['recurrencia_fin_tipo']) AND is_array($evento['recurrencia_fin_tipo'])) {
-            
-                switch($evento['recurrencia_fin_tipo'][0]) {
-                    case '0':   $evento_obj->setRecurrenciaFin(''); 
-                                break;
-                    case '1':   $evento_obj->setRecurrenciaFin($evento['recurrencia_fin_repeticion']);
-                                break;
-                    case '2':   $dateFormat = new sfDateFormat($this->getUser()->getCulture());
-                                $value = $dateFormat->format($evento['recurrencia_fin_fecha']." 00:00:00", 'I', $dateFormat->getInputPattern('g'));
-                                $evento_obj->setRecurrenciaFin($value);
-                                break; 
-                }
-            }
-       } else {
-            $evento_obj->setFrecuenciaIntervalo(null);
-            $evento_obj->setRecurrenciaFin(null);
-            $evento_obj->setRecurrenciaDias(null);
-            $evento_obj->setFrecuencia(null); 
-       }
-
-       return $evento_obj;
-  }
-
-
-  protected function getEventoOrCreate($id = 0)  {
-    if (!$id) {
-        $evento = new Evento();
-    } else {
-      $evento = EventoPeer::retrieveByPk($id);
-      $this->forward404Unless($evento);
-    }
-    return $evento;
-  }
-*/
-
   public function executeEdit()
   {
 
@@ -217,7 +42,6 @@
     
     if ($this->getRequest()->getMethod() == sfRequest::POST) {
 
-
       $this->evento = $evento_generico->updateEventoFromRequest($this->evento, $this->getRequestParameter('evento'), $this->getUser()->getCulture());
       $this->evento->save();
       $this->forward404Unless($this->evento);
@@ -262,7 +86,14 @@
   }
 
 
+    public function executeExportToIcal() {
+        $this->executeList();
+        include("miExportadorIcal.class.php");
+        $e  = new miExportadorIcal();
+        $e->exportar($this->pager->getResults());
+    }
 
+
     protected function updateRelDivisionActividadDocenteFromRequest($fk_evento_id = '') {
         $rel_division_actividad_docente = $this->getRequestParameter('rel_division_actividad_docente');
         if (isset($rel_division_actividad_docente['fk_division_id'])) {
@@ -281,10 +112,8 @@
         }
 
 
-      }
+    }
 
 
-
-
 }
 ?>
\ No newline at end of file

Modified: prosistem/alba/trunk/alba/apps/principal/modules/relDivisionActividadDocente/templates/_list_actions.php
===================================================================
--- prosistem/alba/trunk/alba/apps/principal/modules/relDivisionActividadDocente/templates/_list_actions.php	2007-05-30 18:11:50 UTC (rev 4653)
+++ prosistem/alba/trunk/alba/apps/principal/modules/relDivisionActividadDocente/templates/_list_actions.php	2007-05-30 18:53:43 UTC (rev 4654)
@@ -6,4 +6,9 @@
   <li><?php echo button_to(__('create'), 'relDivisionActividadDocente/create', array (
   'class' => 'sf_admin_action_create',
 )) ?></li>
+
+<li><?php echo button_to(__('export'), 'relDivisionActividadDocente/exportToIcal', array (
+  'class' => '',
+)) ?></li>
+
 </ul>

Modified: prosistem/alba/trunk/alba/lib/model/Evento.php
===================================================================
--- prosistem/alba/trunk/alba/lib/model/Evento.php	2007-05-30 18:11:50 UTC (rev 4653)
+++ prosistem/alba/trunk/alba/lib/model/Evento.php	2007-05-30 18:53:43 UTC (rev 4654)
@@ -1,15 +1,42 @@
 <?php
+/**
+ *    This file is part of Alba.
+ *
+ *    Alba is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    Alba is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with Alba; if not, write to the Free Software
+ *    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
 
+
 /**
  * Subclass for representing a row from the 'evento' table.
  *
- * 
- *
  * @package lib.model
- */ 
+ * @author     José Luis Di Biase <[email protected]>
+ * @author     Héctor Sanchez <[email protected]>
+ * @author     Fernando Toledo <[email protected]>
+ * @version    SVN: $Id: actions.class.php 4566 2007-04-25 15:07:43Z josx $
+ * @filesource
+ * @license GPL
+ */
+
 class Evento extends BaseEvento
 {
 
+    var $aFreq = array ( '', 'SECONDLY', 'MINUTELY' , 'HOURLY', 'DAILY' ,'WEEKLY', 'MONTHLY', 'YEARLY');
+    var $aDias = array ( 'SA', 'FR', 'TH', 'WE', 'TU', 'MO', 'SU');
+
+
     function getHoraInicio() {
         // si la hora de ambos es diferente de 00:00:00 entonces si tiene hora
     }
@@ -20,6 +47,29 @@
     }
 
 
+    function getRecurrenciaDiasIcal() {
+        if(is_numeric($this->getRecurrenciaDias())) {
+            $dias = "";
+            $numero_binario = $this->getRecurrenciaDiasEnBinario();
+            foreach( array(0,1,2,3,4,5,6) as $idx ) {
+                $dias .= ($numero_binario[$idx] == 1)?$this->aDias[$idx].",":"";
+            }
+            return substr($dias,0,-1);
+        } else {
+            return '';
+        }
+    }
+
+
+    function getRecurrenciaDiasEnBinario() {
+        return str_pad(decbin($this->getRecurrenciaDias()), 7, "0", STR_PAD_LEFT); 
+    }
+
+    function getFrecuenciaTexo() {
+        return $aFreq[$this->getFrecuencia()];
+    }
+
+
     function getInfoEnTexto() {
         $txt_salida = "";
         $frecuencia = " con una frecuencia ";
@@ -33,7 +83,7 @@
                        $frecuencia_intervalo = " cada " . $this->getFrecuenciaIntervalo() . "días";;
                        break;
             case '5' : $frecuencia .= "semanal"; 
-                       $numero_binario = str_pad(decbin($this->getRecurrenciaDias()), 7, "0", STR_PAD_LEFT); 
+                       $numero_binario = $this->getRecurrenciaDiasEnBinario(); 
                        $dias_semana .= ($numero_binario[6] == 1)?" Dom":"";
                        $dias_semana .= ($numero_binario[5] == 1)?" Lun":"";
                        $dias_semana .= ($numero_binario[4] == 1)?" Mar":"";

    

SVN Alba r4654 - in prosistem/alba/trunk/alba: apps/principal/lib apps/principal/lib/iCalcreator apps/principal/modules/evento/templates apps/principal/modules/relDivisionActividadDocente/actions apps/principal/modules/relDivisionActividadDocente/templates lib/model

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