A simple and fast iCal parser.
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https://github.com/fangel/SG-iCalendar
With massive help from https://github.com/tpruvot/PHP-iCal
and https://github.com/xonev/SG-iCalendar
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A simple example :
 $ical = new SG_iCalReader( "./basic.ics" );
 //or
 $ical = new SG_iCalReader( "https://example.com/calendar.ics" );
 foreach( $ical->getEvents() As $event ) {
   // Do stuff with the event $event
 }
To check unit tests with phpunit, goto tests/ directory and :
 phpunit AllTests
 phpunit helpers/FreqTest
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CHANGELOG :
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current (31 oct 2010)
 + ical RDATE support (added dates in a range)
 + RDATE and EXDATE arrays support
0.7.0 (30 oct 2010)
 + ical EXDATE support (excluded dates in a range)
 + $event->isWholeDay()
 + getAllOccurrences() for repeated events
 + implemented a cache for repeated events
0.6.0 (29 oct 2010)
 + Added demo based on fullcalendar
 + Added duration unit tests
 + Support of Recurrent events in query Between()
 * various fixes on actual (5) issues
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TODO :
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These iCal keywords are not supported for the moment :
 - RECURRENCE-ID : to move one event from a recurrence
 - EXRULE : to exclude multiple days by a complex rule
Also, multiple RRULE could be specified for an event,
but that is not the case for most calendar applications
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To get more information about ical format and rules :
see https://www.ietf.org/rfc/rfc2445.txt