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<?php |
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/** |
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* Gets and renders iCal feeds for the Upcoming Events widget and shortcode |
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*/ |
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class iCalendarReader { |
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public $todo_count = 0; |
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public $event_count = 0; |
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public $cal = array(); |
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public $_lastKeyWord = ''; |
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public $timezone = null; |
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/** |
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* Class constructor |
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* |
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* @return void |
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*/ |
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public function __construct() {} |
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/** |
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* Return an array of events |
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* |
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* @param string $url (default: '') |
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* @return array | false on failure |
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*/ |
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public function get_events( $url = '', $count = 5 ) { |
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$count = (int) $count; |
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$transient_id = 'icalendar_vcal_' . md5( $url ) . '_' . $count; |
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$vcal = get_transient( $transient_id ); |
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if ( ! empty( $vcal ) ) { |
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if ( isset( $vcal['TIMEZONE'] ) ) |
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$this->timezone = $this->timezone_from_string( $vcal['TIMEZONE'] ); |
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if ( isset( $vcal['VEVENT'] ) ) { |
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$vevent = $vcal['VEVENT']; |
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if ( $count > 0 ) |
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$vevent = array_slice( $vevent, 0, $count ); |
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$this->cal['VEVENT'] = $vevent; |
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return $this->cal['VEVENT']; |
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} |
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} |
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if ( ! $this->parse( $url ) ) |
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return false; |
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$vcal = array(); |
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if ( $this->timezone ) { |
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$vcal['TIMEZONE'] = $this->timezone->getName(); |
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} else { |
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$this->timezone = $this->timezone_from_string( '' ); |
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} |
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if ( ! empty( $this->cal['VEVENT'] ) ) { |
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$vevent = $this->cal['VEVENT']; |
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// check for recurring events |
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// $vevent = $this->add_recurring_events( $vevent ); |
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// remove before caching - no sense in hanging onto the past |
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$vevent = $this->filter_past_and_recurring_events( $vevent ); |
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// order by soonest start date |
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$vevent = $this->sort_by_recent( $vevent ); |
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$vcal['VEVENT'] = $vevent; |
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} |
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set_transient( $transient_id, $vcal, HOUR_IN_SECONDS ); |
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if ( !isset( $vcal['VEVENT'] ) ) |
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return false; |
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if ( $count > 0 ) |
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return array_slice( $vcal['VEVENT'], 0, $count ); |
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return $vcal['VEVENT']; |
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} |
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function apply_timezone_offset( $events ) { |
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if ( ! $events ) { |
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return $events; |
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} |
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// get timezone offset from the timezone name. |
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$timezone_name = get_option( 'timezone_string' ); |
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if ( $timezone_name ) { |
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$timezone = new DateTimeZone( $timezone_name ); |
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} else { |
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// If the timezone isn't set then the GMT offset must be set. |
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// generate a DateInterval object from the timezone offset |
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$gmt_offset = get_option( 'gmt_offset' ) * HOUR_IN_MINUTES; |
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$timezone_offset_interval = date_interval_create_from_date_string( "{$gmt_offset} minutes" ); |
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$timezone = new DateTimeZone( 'UTC' ); |
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} |
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$offsetted_events = array(); |
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foreach ( $events as $event ) { |
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// Don't handle all-day events |
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if ( 8 < strlen( $event['DTSTART'] ) ) { |
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$start_time = preg_replace( '/Z$/', '', $event['DTSTART'] ); |
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$start_time = new DateTime( $start_time, $this->timezone ); |
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$start_time->setTimeZone( $timezone ); |
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$end_time = preg_replace( '/Z$/', '', $event['DTEND'] ); |
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$end_time = new DateTime( $end_time, $this->timezone ); |
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$end_time->setTimeZone( $timezone ); |
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if ( $timezone_offset_interval ) { |
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$start_time->add( $timezone_offset_interval ); |
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$end_time->add( $timezone_offset_interval ); |
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} |
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$event['DTSTART'] = $start_time->format( 'YmdHis\Z' ); |
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$event['DTEND'] = $end_time->format( 'YmdHis\Z' ); |
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} |
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$offsetted_events[] = $event; |
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} |
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return $offsetted_events; |
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} |
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protected function filter_past_and_recurring_events( $events ) { |
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$upcoming = array(); |
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$set_recurring_events = array(); |
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$recurrences = array(); |
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/** |
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* This filter allows any time to be passed in for testing or changing timezones, etc... |
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* |
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* @module widgets |
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* |
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* @since 3.4.0 |
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* |
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* @param object time() A time object. |
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*/ |
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$current = apply_filters( 'ical_get_current_time', time() ); |
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foreach ( $events as $event ) { |
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$date_from_ics = strtotime( $event['DTSTART'] ); |
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View Code Duplication |
if ( isset( $event['DTEND'] ) ) { |
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$duration = strtotime( $event['DTEND'] ) - strtotime( $event['DTSTART'] ); |
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} else { |
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$duration = 0; |
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} |
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if ( isset( $event['RRULE'] ) && $this->timezone->getName() && 8 != strlen( $event['DTSTART'] ) ) { |
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try { |
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$adjusted_time = new DateTime( $event['DTSTART'], new DateTimeZone('UTC') ); |
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$adjusted_time->setTimeZone( new DateTimeZone( $this->timezone->getName() ) ); |
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$event['DTSTART'] = $adjusted_time->format('Ymd\THis'); |
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$date_from_ics = strtotime( $event['DTSTART'] ); |
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$event['DTEND'] = date( 'Ymd\THis', strtotime( $event['DTSTART'] ) + $duration ); |
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} catch ( Exception $e ) { |
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// Invalid argument to DateTime |
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} |
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if ( isset( $event['EXDATE'] ) ) { |
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$exdates = array(); |
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foreach ( (array) $event['EXDATE'] as $exdate ) { |
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try { |
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$adjusted_time = new DateTime( $exdate, new DateTimeZone('UTC') ); |
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$adjusted_time->setTimeZone( new DateTimeZone( $this->timezone->getName() ) ); |
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if ( 8 == strlen( $event['DTSTART'] ) ) { |
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$exdates[] = $adjusted_time->format( 'Ymd' ); |
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} else { |
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$exdates[] = $adjusted_time->format( 'Ymd\THis' ); |
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} |
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} catch ( Exception $e ) { |
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// Invalid argument to DateTime |
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} |
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} |
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$event['EXDATE'] = $exdates; |
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} else { |
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$event['EXDATE'] = array(); |
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} |
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} |
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if ( ! isset( $event['DTSTART'] ) ) { |
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continue; |
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} |
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// Process events with RRULE before other events |
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$rrule = isset( $event['RRULE'] ) ? $event['RRULE'] : false ; |
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$uid = $event['UID']; |
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if ( $rrule && ! in_array( $uid, $set_recurring_events ) ) { |
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// Break down the RRULE into digestible chunks |
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$rrule_array = array(); |
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foreach ( explode( ";", $event['RRULE'] ) as $rline ) { |
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list( $rkey, $rvalue ) = explode( "=", $rline, 2 ); |
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$rrule_array[$rkey] = $rvalue; |
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} |
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$interval = ( isset( $rrule_array['INTERVAL'] ) ) ? $rrule_array['INTERVAL'] : 1; |
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$rrule_count = ( isset( $rrule_array['COUNT'] ) ) ? $rrule_array['COUNT'] : 0; |
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$until = ( isset( $rrule_array['UNTIL'] ) ) ? strtotime( $rrule_array['UNTIL'] ) : strtotime( '+1 year', $current ); |
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// Used to bound event checks |
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$echo_limit = 10; |
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$noop = false; |
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// Set bydays for the event |
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$weekdays = array( 'SU', 'MO', 'TU', 'WE', 'TH', 'FR', 'SA' ); |
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$bydays = $weekdays; |
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// Calculate a recent start date for incrementing depending on the frequency and interval |
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switch ( $rrule_array['FREQ'] ) { |
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case 'DAILY': |
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$frequency = 'day'; |
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$echo_limit = 10; |
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if ( $date_from_ics >= $current ) { |
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$recurring_event_date_start = date( 'Ymd\THis', strtotime( $event['DTSTART'] ) ); |
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} else { |
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// Interval and count |
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$catchup = floor( ( $current - strtotime( $event['DTSTART'] ) ) / ( $interval * DAY_IN_SECONDS ) ); |
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if ( $rrule_count && $catchup > 0 ) { |
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if ( $catchup < $rrule_count ) { |
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$rrule_count = $rrule_count - $catchup; |
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$recurring_event_date_start = date( 'Ymd', strtotime( '+ ' . ( $interval * $catchup ) . ' days', strtotime( $event['DTSTART'] ) ) ) . date( '\THis', strtotime( $event['DTSTART'] ) ); |
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} else { |
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$noop = true; |
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} |
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View Code Duplication |
} else { |
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$recurring_event_date_start = date( 'Ymd', strtotime( '+ ' . ( $interval * $catchup ) . ' days', strtotime( $event['DTSTART'] ) ) ) . date( '\THis', strtotime( $event['DTSTART'] ) ); |
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} |
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} |
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break; |
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case 'WEEKLY': |
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$frequency = 'week'; |
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$echo_limit = 4; |
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// BYDAY exception to current date |
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$day = false; |
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if ( ! isset( $rrule_array['BYDAY'] ) ) { |
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$day = $rrule_array['BYDAY'] = strtoupper( substr( date( 'D', strtotime( $event['DTSTART'] ) ), 0, 2 ) ); |
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} |
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$bydays = explode( ',', $rrule_array['BYDAY'] ); |
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if ( $date_from_ics >= $current ) { |
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$recurring_event_date_start = date( 'Ymd\THis', strtotime( $event['DTSTART'] ) ); |
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} else { |
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// Interval and count |
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$catchup = floor( ( $current - strtotime( $event['DTSTART'] ) ) / ( $interval * WEEK_IN_SECONDS ) ); |
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if ( $rrule_count && $catchup > 0 ) { |
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if ( ( $catchup * count( $bydays ) ) < $rrule_count ) { |
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$rrule_count = $rrule_count - ( $catchup * count( $bydays ) ); // Estimate current event count |
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$recurring_event_date_start = date( 'Ymd', strtotime( '+ ' . ( $interval * $catchup ) . ' weeks', strtotime( $event['DTSTART'] ) ) ) . date( '\THis', strtotime( $event['DTSTART'] ) ); |
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} else { |
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$noop = true; |
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} |
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View Code Duplication |
} else { |
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$recurring_event_date_start = date( 'Ymd', strtotime( '+ ' . ( $interval * $catchup ) . ' weeks', strtotime( $event['DTSTART'] ) ) ) . date( '\THis', strtotime( $event['DTSTART'] ) ); |
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} |
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} |
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// Set to Sunday start |
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if ( ! $noop && 'SU' !== strtoupper( substr( date( 'D', strtotime( $recurring_event_date_start ) ), 0, 2 ) ) ) { |
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$recurring_event_date_start = date( 'Ymd', strtotime( "last Sunday", strtotime( $recurring_event_date_start ) ) ) . date( '\THis', strtotime( $event['DTSTART'] ) ); |
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} |
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break; |
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case 'MONTHLY': |
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$frequency = 'month'; |
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$echo_limit = 1; |
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if ( $date_from_ics >= $current ) { |
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$recurring_event_date_start = date( 'Ymd\THis', strtotime( $event['DTSTART'] ) ); |
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} else { |
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// Describe the date in the month |
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if ( isset( $rrule_array['BYDAY'] ) ) { |
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$day_number = substr( $rrule_array['BYDAY'], 0, 1 ); |
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$week_day = substr( $rrule_array['BYDAY'], 1 ); |
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$day_cardinals = array( 1 => 'first', 2 => 'second', 3 => 'third', 4 => 'fourth', 5 => 'fifth' ); |
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$weekdays = array( 'SU' => 'Sunday', 'MO' => 'Monday', 'TU' => 'Tuesday', 'WE' => 'Wednesday', 'TH' => 'Thursday', 'FR' => 'Friday', 'SA' => 'Saturday' ); |
|
291
|
|
|
$event_date_desc = "{$day_cardinals[$day_number]} {$weekdays[$week_day]} of "; |
|
292
|
|
|
} else { |
|
293
|
|
|
$event_date_desc = date( 'd ', strtotime( $event['DTSTART'] ) ); |
|
294
|
|
|
} |
|
295
|
|
|
|
|
296
|
|
|
// Interval only |
|
297
|
|
|
if ( $interval > 1 ) { |
|
298
|
|
|
$catchup = 0; |
|
299
|
|
|
$maybe = strtotime( $event['DTSTART'] ); |
|
300
|
|
|
while ( $maybe < $current ) { |
|
301
|
|
|
$maybe = strtotime( '+ ' . ( $interval * $catchup ) . ' months', strtotime( $event['DTSTART'] ) ); |
|
302
|
|
|
$catchup++; |
|
303
|
|
|
} |
|
304
|
|
|
$recurring_event_date_start = date( 'Ymd', strtotime( $event_date_desc . date( 'F Y', strtotime( '+ ' . ( $interval * ( $catchup - 1 ) ) . ' months', strtotime( $event['DTSTART'] ) ) ) ) ) . date( '\THis', strtotime( $event['DTSTART'] ) ); |
|
305
|
|
View Code Duplication |
} else { |
|
306
|
|
|
$recurring_event_date_start = date( 'Ymd', strtotime( $event_date_desc . date( 'F Y', $current ) ) ) . date( '\THis', strtotime( $event['DTSTART'] ) ); |
|
307
|
|
|
} |
|
308
|
|
|
|
|
309
|
|
|
// Add one interval if necessary |
|
310
|
|
|
if ( strtotime( $recurring_event_date_start ) < $current ) { |
|
311
|
|
|
if ( $interval > 1 ) { |
|
312
|
|
|
$recurring_event_date_start = date( 'Ymd', strtotime( $event_date_desc . date( 'F Y', strtotime( '+ ' . ( $interval * $catchup ) . ' months', strtotime( $event['DTSTART'] ) ) ) ) ) . date( '\THis', strtotime( $event['DTSTART'] ) ); |
|
|
|
|
|
|
313
|
|
View Code Duplication |
} else { |
|
314
|
|
|
try { |
|
315
|
|
|
$adjustment = new DateTime( date( 'Y-m-d', $current ) ); |
|
316
|
|
|
$adjustment->modify( 'first day of next month' ); |
|
317
|
|
|
$recurring_event_date_start = date( 'Ymd', strtotime( $event_date_desc . $adjustment->format( 'F Y' ) ) ) . date( '\THis', strtotime( $event['DTSTART'] ) ); |
|
318
|
|
|
} catch ( Exception $e ) { |
|
319
|
|
|
// Invalid argument to DateTime |
|
320
|
|
|
} |
|
321
|
|
|
} |
|
322
|
|
|
} |
|
323
|
|
|
} |
|
324
|
|
|
break; |
|
325
|
|
|
|
|
326
|
|
|
case 'YEARLY': |
|
327
|
|
|
$frequency = 'year'; |
|
328
|
|
|
$echo_limit = 1; |
|
329
|
|
|
|
|
330
|
|
|
if ( $date_from_ics >= $current ) { |
|
331
|
|
|
$recurring_event_date_start = date( "Ymd\THis", strtotime( $event['DTSTART'] ) ); |
|
332
|
|
|
} else { |
|
333
|
|
|
$recurring_event_date_start = date( 'Y', $current ) . date( "md\THis", strtotime( $event['DTSTART'] ) ); |
|
334
|
|
View Code Duplication |
if ( strtotime( $recurring_event_date_start ) < $current ) { |
|
335
|
|
|
try { |
|
336
|
|
|
$next = new DateTime( date( 'Y-m-d', $current ) ); |
|
337
|
|
|
$next->modify( 'first day of next year' ); |
|
338
|
|
|
$recurring_event_date_start = $next->format( 'Y' ) . date ( 'md\THis', strtotime( $event['DTSTART'] ) ); |
|
339
|
|
|
} catch ( Exception $e ) { |
|
340
|
|
|
// Invalid argument to DateTime |
|
341
|
|
|
} |
|
342
|
|
|
} |
|
343
|
|
|
} |
|
344
|
|
|
break; |
|
345
|
|
|
|
|
346
|
|
|
default: |
|
347
|
|
|
$frequency = false; |
|
348
|
|
|
} |
|
349
|
|
|
|
|
350
|
|
|
if ( $frequency !== false && ! $noop ) { |
|
351
|
|
|
$count_counter = 1; |
|
352
|
|
|
|
|
353
|
|
|
// If no COUNT limit, go to 10 |
|
354
|
|
|
if ( empty( $rrule_count ) ) { |
|
355
|
|
|
$rrule_count = 10; |
|
356
|
|
|
} |
|
357
|
|
|
|
|
358
|
|
|
// Set up EXDATE handling for the event |
|
359
|
|
|
$exdates = ( isset( $event['EXDATE'] ) ) ? $event['EXDATE'] : array(); |
|
360
|
|
|
|
|
361
|
|
|
for ( $i = 1; $i <= $echo_limit; $i++ ) { |
|
362
|
|
|
|
|
363
|
|
|
// Weeks need a daily loop and must check for inclusion in BYDAYS |
|
364
|
|
|
if ( 'week' == $frequency ) { |
|
365
|
|
|
$byday_event_date_start = strtotime( $recurring_event_date_start ); |
|
366
|
|
|
|
|
367
|
|
|
foreach ( $weekdays as $day ) { |
|
368
|
|
|
|
|
369
|
|
|
$event_start_timestamp = $byday_event_date_start; |
|
370
|
|
|
$start_time = date( 'His', $event_start_timestamp ); |
|
371
|
|
|
$event_end_timestamp = $event_start_timestamp + $duration; |
|
372
|
|
|
$end_time = date( 'His', $event_end_timestamp ); |
|
|
|
|
|
|
373
|
|
View Code Duplication |
if ( 8 == strlen( $event['DTSTART'] ) ) { |
|
374
|
|
|
$exdate_compare = date( 'Ymd', $event_start_timestamp ); |
|
375
|
|
|
} else { |
|
376
|
|
|
$exdate_compare = date( 'Ymd\THis', $event_start_timestamp ); |
|
377
|
|
|
} |
|
378
|
|
|
|
|
379
|
|
View Code Duplication |
if ( in_array( $day, $bydays ) && $event_end_timestamp > $current && $event_start_timestamp < $until && $count_counter <= $rrule_count && $event_start_timestamp >= $date_from_ics && ! in_array( $exdate_compare, $exdates ) ) { |
|
380
|
|
|
if ( 8 == strlen( $event['DTSTART'] ) ) { |
|
381
|
|
|
$event['DTSTART'] = date( 'Ymd', $event_start_timestamp ); |
|
382
|
|
|
$event['DTEND'] = date( 'Ymd', $event_end_timestamp ); |
|
383
|
|
|
} else { |
|
384
|
|
|
$event['DTSTART'] = date( 'Ymd\THis', $event_start_timestamp ); |
|
385
|
|
|
$event['DTEND'] = date( 'Ymd\THis', $event_end_timestamp ); |
|
386
|
|
|
} |
|
387
|
|
|
if ( $this->timezone->getName() && 8 != strlen( $event['DTSTART'] ) ) { |
|
388
|
|
|
try { |
|
389
|
|
|
$adjusted_time = new DateTime( $event['DTSTART'], new DateTimeZone( $this->timezone->getName() ) ); |
|
390
|
|
|
$adjusted_time->setTimeZone( new DateTimeZone( 'UTC' ) ); |
|
391
|
|
|
$event['DTSTART'] = $adjusted_time->format('Ymd\THis'); |
|
392
|
|
|
|
|
393
|
|
|
$event['DTEND'] = date( 'Ymd\THis', strtotime( $event['DTSTART'] ) + $duration ); |
|
394
|
|
|
} catch ( Exception $e ) { |
|
395
|
|
|
// Invalid argument to DateTime |
|
396
|
|
|
} |
|
397
|
|
|
} |
|
398
|
|
|
$upcoming[] = $event; |
|
399
|
|
|
$count_counter++; |
|
400
|
|
|
} |
|
401
|
|
|
|
|
402
|
|
|
// Move forward one day |
|
403
|
|
|
$byday_event_date_start = strtotime( date( 'Ymd\T', strtotime( '+ 1 day', $event_start_timestamp ) ) . $start_time ); |
|
404
|
|
|
} |
|
405
|
|
|
|
|
406
|
|
|
// Restore first event timestamp |
|
407
|
|
|
$event_start_timestamp = strtotime( $recurring_event_date_start ); |
|
408
|
|
|
|
|
409
|
|
|
} else { |
|
410
|
|
|
|
|
411
|
|
|
$event_start_timestamp = strtotime( $recurring_event_date_start ); |
|
412
|
|
|
$start_time = date( 'His', $event_start_timestamp ); |
|
413
|
|
|
$event_end_timestamp = $event_start_timestamp + $duration; |
|
414
|
|
|
$end_time = date( 'His', $event_end_timestamp ); |
|
415
|
|
View Code Duplication |
if ( 8 == strlen( $event['DTSTART'] ) ) { |
|
416
|
|
|
$exdate_compare = date( 'Ymd', $event_start_timestamp ); |
|
417
|
|
|
} else { |
|
418
|
|
|
$exdate_compare = date( 'Ymd\THis', $event_start_timestamp ); |
|
419
|
|
|
} |
|
420
|
|
|
|
|
421
|
|
View Code Duplication |
if ( $event_end_timestamp > $current && $event_start_timestamp < $until && $count_counter <= $rrule_count && $event_start_timestamp >= $date_from_ics && ! in_array( $exdate_compare, $exdates ) ) { |
|
422
|
|
|
if ( 8 == strlen( $event['DTSTART'] ) ) { |
|
423
|
|
|
$event['DTSTART'] = date( 'Ymd', $event_start_timestamp ); |
|
424
|
|
|
$event['DTEND'] = date( 'Ymd', $event_end_timestamp ); |
|
425
|
|
|
} else { |
|
426
|
|
|
$event['DTSTART'] = date( 'Ymd\T', $event_start_timestamp ) . $start_time; |
|
427
|
|
|
$event['DTEND'] = date( 'Ymd\T', $event_end_timestamp ) . $end_time; |
|
428
|
|
|
} |
|
429
|
|
|
if ( $this->timezone->getName() && 8 != strlen( $event['DTSTART'] ) ) { |
|
430
|
|
|
try { |
|
431
|
|
|
$adjusted_time = new DateTime( $event['DTSTART'], new DateTimeZone( $this->timezone->getName() ) ); |
|
432
|
|
|
$adjusted_time->setTimeZone( new DateTimeZone( 'UTC' ) ); |
|
433
|
|
|
$event['DTSTART'] = $adjusted_time->format('Ymd\THis'); |
|
434
|
|
|
|
|
435
|
|
|
$event['DTEND'] = date( 'Ymd\THis', strtotime( $event['DTSTART'] ) + $duration ); |
|
436
|
|
|
} catch ( Exception $e ) { |
|
437
|
|
|
// Invalid argument to DateTime |
|
438
|
|
|
} |
|
439
|
|
|
} |
|
440
|
|
|
$upcoming[] = $event; |
|
441
|
|
|
$count_counter++; |
|
442
|
|
|
} |
|
443
|
|
|
} |
|
444
|
|
|
|
|
445
|
|
|
// Set up next interval and reset $event['DTSTART'] and $event['DTEND'], keeping timestamps intact |
|
446
|
|
|
$next_start_timestamp = strtotime( "+ {$interval} {$frequency}s", $event_start_timestamp ); |
|
447
|
|
|
if ( 8 == strlen( $event['DTSTART'] ) ) { |
|
448
|
|
|
$event['DTSTART'] = date( 'Ymd', $next_start_timestamp ); |
|
449
|
|
|
$event['DTEND'] = date( 'Ymd', strtotime( $event['DTSTART'] ) + $duration ); |
|
450
|
|
View Code Duplication |
} else { |
|
451
|
|
|
$event['DTSTART'] = date( 'Ymd\THis', $next_start_timestamp ); |
|
452
|
|
|
$event['DTEND'] = date( 'Ymd\THis', strtotime( $event['DTSTART'] ) + $duration ); |
|
453
|
|
|
} |
|
454
|
|
|
|
|
455
|
|
|
// Move recurring event date forward |
|
456
|
|
|
$recurring_event_date_start = $event['DTSTART']; |
|
457
|
|
|
} |
|
458
|
|
|
$set_recurring_events[] = $uid; |
|
459
|
|
|
|
|
460
|
|
|
} |
|
461
|
|
|
|
|
462
|
|
View Code Duplication |
} else { |
|
463
|
|
|
// Process normal events |
|
464
|
|
|
if ( strtotime( isset( $event['DTEND'] ) ? $event['DTEND'] : $event['DTSTART'] ) >= $current ) { |
|
465
|
|
|
$upcoming[] = $event; |
|
466
|
|
|
} |
|
467
|
|
|
} |
|
468
|
|
|
} |
|
469
|
|
|
return $upcoming; |
|
470
|
|
|
} |
|
471
|
|
|
|
|
472
|
|
|
/** |
|
473
|
|
|
* Parse events from an iCalendar feed |
|
474
|
|
|
* |
|
475
|
|
|
* @param string $url (default: '') |
|
476
|
|
|
* @return array | false on failure |
|
477
|
|
|
*/ |
|
478
|
|
|
public function parse( $url = '' ) { |
|
479
|
|
|
$cache_group = 'icalendar_reader_parse'; |
|
480
|
|
|
$disable_get_key = 'disable:' . md5( $url ); |
|
481
|
|
|
|
|
482
|
|
|
// Check to see if previous attempts have failed |
|
483
|
|
|
if ( false !== wp_cache_get( $disable_get_key, $cache_group ) ) |
|
484
|
|
|
return false; |
|
485
|
|
|
|
|
486
|
|
|
// rewrite webcal: URI schem to HTTP |
|
487
|
|
|
$url = preg_replace('/^webcal/', 'http', $url ); |
|
488
|
|
|
// try to fetch |
|
489
|
|
|
$r = wp_remote_get( $url, array( 'timeout' => 3, 'sslverify' => false ) ); |
|
490
|
|
|
if ( 200 !== wp_remote_retrieve_response_code( $r ) ) { |
|
491
|
|
|
// We were unable to fetch any content, so don't try again for another 60 seconds |
|
492
|
|
|
wp_cache_set( $disable_get_key, 1, $cache_group, 60 ); |
|
493
|
|
|
return false; |
|
494
|
|
|
} |
|
495
|
|
|
|
|
496
|
|
|
$body = wp_remote_retrieve_body( $r ); |
|
497
|
|
|
if ( empty( $body ) ) |
|
498
|
|
|
return false; |
|
499
|
|
|
|
|
500
|
|
|
$body = str_replace( "\r\n", "\n", $body ); |
|
501
|
|
|
$lines = preg_split( "/\n(?=[A-Z])/", $body ); |
|
502
|
|
|
|
|
503
|
|
|
if ( empty( $lines ) ) |
|
504
|
|
|
return false; |
|
505
|
|
|
|
|
506
|
|
|
if ( false === stristr( $lines[0], 'BEGIN:VCALENDAR' ) ) |
|
507
|
|
|
return false; |
|
508
|
|
|
|
|
509
|
|
|
foreach ( $lines as $line ) { |
|
510
|
|
|
$add = $this->key_value_from_string( $line ); |
|
|
|
|
|
|
511
|
|
|
if ( ! $add ) { |
|
512
|
|
|
$this->add_component( $type, false, $line ); |
|
|
|
|
|
|
513
|
|
|
continue; |
|
514
|
|
|
} |
|
515
|
|
|
list( $keyword, $value ) = $add; |
|
516
|
|
|
|
|
517
|
|
|
switch ( $keyword ) { |
|
518
|
|
|
case 'BEGIN': |
|
519
|
|
|
case 'END': |
|
520
|
|
|
switch ( $line ) { |
|
521
|
|
|
case 'BEGIN:VTODO': |
|
522
|
|
|
$this->todo_count++; |
|
523
|
|
|
$type = 'VTODO'; |
|
524
|
|
|
break; |
|
525
|
|
|
case 'BEGIN:VEVENT': |
|
526
|
|
|
$this->event_count++; |
|
527
|
|
|
$type = 'VEVENT'; |
|
528
|
|
|
break; |
|
529
|
|
|
case 'BEGIN:VCALENDAR': |
|
530
|
|
|
case 'BEGIN:DAYLIGHT': |
|
531
|
|
|
case 'BEGIN:VTIMEZONE': |
|
532
|
|
|
case 'BEGIN:STANDARD': |
|
533
|
|
|
$type = $value; |
|
534
|
|
|
break; |
|
535
|
|
|
case 'END:VTODO': |
|
536
|
|
|
case 'END:VEVENT': |
|
537
|
|
|
case 'END:VCALENDAR': |
|
538
|
|
|
case 'END:DAYLIGHT': |
|
539
|
|
|
case 'END:VTIMEZONE': |
|
540
|
|
|
case 'END:STANDARD': |
|
541
|
|
|
$type = 'VCALENDAR'; |
|
542
|
|
|
break; |
|
543
|
|
|
} |
|
544
|
|
|
break; |
|
545
|
|
|
case 'TZID': |
|
546
|
|
|
if ( 'VTIMEZONE' == $type && ! $this->timezone ) |
|
547
|
|
|
$this->timezone = $this->timezone_from_string( $value ); |
|
548
|
|
|
break; |
|
549
|
|
|
case 'X-WR-TIMEZONE': |
|
550
|
|
|
if ( ! $this->timezone ) |
|
551
|
|
|
$this->timezone = $this->timezone_from_string( $value ); |
|
552
|
|
|
break; |
|
553
|
|
|
default: |
|
554
|
|
|
$this->add_component( $type, $keyword, $value ); |
|
555
|
|
|
break; |
|
556
|
|
|
} |
|
557
|
|
|
} |
|
558
|
|
|
|
|
559
|
|
|
// Filter for RECURRENCE-IDs |
|
560
|
|
|
$recurrences = array(); |
|
561
|
|
|
if ( array_key_exists( 'VEVENT', $this->cal ) ) { |
|
562
|
|
|
foreach ( $this->cal['VEVENT'] as $event ) { |
|
563
|
|
|
if ( isset( $event['RECURRENCE-ID'] ) ) { |
|
564
|
|
|
$recurrences[] = $event; |
|
565
|
|
|
} |
|
566
|
|
|
} |
|
567
|
|
|
foreach ( $recurrences as $recurrence ) { |
|
568
|
|
|
for ( $i = 0; $i < count( $this->cal['VEVENT'] ); $i++ ) { |
|
|
|
|
|
|
569
|
|
|
if ( $this->cal['VEVENT'][ $i ]['UID'] == $recurrence['UID'] && ! isset( $this->cal['VEVENT'][ $i ]['RECURRENCE-ID'] ) ) { |
|
570
|
|
|
$this->cal['VEVENT'][ $i ]['EXDATE'][] = $recurrence['RECURRENCE-ID']; |
|
571
|
|
|
break; |
|
572
|
|
|
} |
|
573
|
|
|
} |
|
574
|
|
|
} |
|
575
|
|
|
} |
|
576
|
|
|
|
|
577
|
|
|
return $this->cal; |
|
578
|
|
|
} |
|
579
|
|
|
|
|
580
|
|
|
/** |
|
581
|
|
|
* Parse key:value from a string |
|
582
|
|
|
* |
|
583
|
|
|
* @param string $text (default: '') |
|
584
|
|
|
* @return array |
|
585
|
|
|
*/ |
|
586
|
|
|
public function key_value_from_string( $text = '' ) { |
|
587
|
|
|
preg_match( '/([^:]+)(;[^:]+)?[:]([\w\W]*)/', $text, $matches ); |
|
588
|
|
|
|
|
589
|
|
|
if ( 0 == count( $matches ) ) |
|
590
|
|
|
return false; |
|
591
|
|
|
|
|
592
|
|
|
return array( $matches[1], $matches[3] ); |
|
593
|
|
|
} |
|
594
|
|
|
|
|
595
|
|
|
/** |
|
596
|
|
|
* Convert a timezone name into a timezone object. |
|
597
|
|
|
* |
|
598
|
|
|
* @param string $text Timezone name. Example: America/Chicago |
|
599
|
|
|
* @return object|null A DateTimeZone object if the conversion was successful. |
|
600
|
|
|
*/ |
|
601
|
|
|
private function timezone_from_string( $text ) { |
|
602
|
|
|
try { |
|
603
|
|
|
$timezone = new DateTimeZone( $text ); |
|
604
|
|
|
} catch ( Exception $e ) { |
|
605
|
|
|
$blog_timezone = get_option( 'timezone_string' ); |
|
606
|
|
|
if ( ! $blog_timezone ) { |
|
607
|
|
|
$blog_timezone = 'Etc/UTC'; |
|
608
|
|
|
} |
|
609
|
|
|
|
|
610
|
|
|
$timezone = new DateTimeZone( $blog_timezone ); |
|
611
|
|
|
} |
|
612
|
|
|
|
|
613
|
|
|
return $timezone; |
|
614
|
|
|
} |
|
615
|
|
|
|
|
616
|
|
|
/** |
|
617
|
|
|
* Add a component to the calendar array |
|
618
|
|
|
* |
|
619
|
|
|
* @param string $component (default: '') |
|
620
|
|
|
* @param string $keyword (default: '') |
|
621
|
|
|
* @param string $value (default: '') |
|
622
|
|
|
* @return void |
|
623
|
|
|
*/ |
|
624
|
|
|
public function add_component( $component = '', $keyword = '', $value = '' ) { |
|
625
|
|
|
if ( false == $keyword ) { |
|
|
|
|
|
|
626
|
|
|
$keyword = $this->last_keyword; |
|
|
|
|
|
|
627
|
|
|
switch ( $component ) { |
|
628
|
|
|
case 'VEVENT': |
|
629
|
|
|
$value = $this->cal[ $component ][ $this->event_count - 1 ][ $keyword ] . $value; |
|
630
|
|
|
break; |
|
631
|
|
|
case 'VTODO' : |
|
632
|
|
|
$value = $this->cal[ $component ][ $this->todo_count - 1 ][ $keyword ] . $value; |
|
633
|
|
|
break; |
|
634
|
|
|
} |
|
635
|
|
|
} |
|
636
|
|
|
|
|
637
|
|
|
/* |
|
638
|
|
|
* Some events have a specific timezone set in their start/end date, |
|
639
|
|
|
* and it may or may not be different than the calendar timzeone. |
|
640
|
|
|
* Valid formats include: |
|
641
|
|
|
* DTSTART;TZID=Pacific Standard Time:20141219T180000 |
|
642
|
|
|
* DTEND;TZID=Pacific Standard Time:20141219T200000 |
|
643
|
|
|
* EXDATE:19960402T010000Z,19960403T010000Z,19960404T010000Z |
|
644
|
|
|
* EXDATE;VALUE=DATE:2015050 |
|
645
|
|
|
* EXDATE;TZID=America/New_York:20150424T170000 |
|
646
|
|
|
* EXDATE;TZID=Pacific Standard Time:20120615T140000,20120629T140000,20120706T140000 |
|
647
|
|
|
*/ |
|
648
|
|
|
|
|
649
|
|
|
// Always store EXDATE as an array |
|
650
|
|
|
if ( stristr( $keyword, 'EXDATE' ) ) { |
|
651
|
|
|
$value = explode( ',', $value ); |
|
652
|
|
|
} |
|
653
|
|
|
|
|
654
|
|
|
// Adjust DTSTART, DTEND, and EXDATE according to their TZID if set |
|
655
|
|
|
if ( strpos( $keyword, ';' ) && ( stristr( $keyword, 'DTSTART' ) || stristr( $keyword, 'DTEND' ) || stristr( $keyword, 'EXDATE' ) || stristr( $keyword, 'RECURRENCE-ID' ) ) ) { |
|
656
|
|
|
$keyword = explode( ';', $keyword ); |
|
657
|
|
|
|
|
658
|
|
|
$tzid = false; |
|
659
|
|
|
if ( 2 == count( $keyword ) ) { |
|
660
|
|
|
$tparam = $keyword[1]; |
|
661
|
|
|
|
|
662
|
|
|
if ( strpos( $tparam, "TZID" ) !== false ) { |
|
663
|
|
|
$tzid = $this->timezone_from_string( str_replace( 'TZID=', '', $tparam ) ); |
|
664
|
|
|
} |
|
665
|
|
|
} |
|
666
|
|
|
|
|
667
|
|
|
// Normalize all times to default UTC |
|
668
|
|
|
if ( $tzid ) { |
|
669
|
|
|
$adjusted_times = array(); |
|
670
|
|
|
foreach ( (array) $value as $v ) { |
|
671
|
|
|
try { |
|
672
|
|
|
$adjusted_time = new DateTime( $v, $tzid ); |
|
673
|
|
|
$adjusted_time->setTimeZone( new DateTimeZone( 'UTC' ) ); |
|
674
|
|
|
$adjusted_times[] = $adjusted_time->format('Ymd\THis'); |
|
675
|
|
|
} catch ( Exception $e ) { |
|
676
|
|
|
// Invalid argument to DateTime |
|
677
|
|
|
return; |
|
678
|
|
|
} |
|
679
|
|
|
} |
|
680
|
|
|
$value = $adjusted_times; |
|
681
|
|
|
} |
|
682
|
|
|
|
|
683
|
|
|
// Format for adding to event |
|
684
|
|
|
$keyword = $keyword[0]; |
|
685
|
|
|
if ( 'EXDATE' != $keyword ) { |
|
686
|
|
|
$value = implode( (array) $value ); |
|
687
|
|
|
} |
|
688
|
|
|
} |
|
689
|
|
|
|
|
690
|
|
|
foreach ( (array) $value as $v ) { |
|
691
|
|
|
switch ($component) { |
|
692
|
|
View Code Duplication |
case 'VTODO': |
|
693
|
|
|
if ( 'EXDATE' == $keyword ) { |
|
694
|
|
|
$this->cal[ $component ][ $this->todo_count - 1 ][ $keyword ][] = $v; |
|
695
|
|
|
} else { |
|
696
|
|
|
$this->cal[ $component ][ $this->todo_count - 1 ][ $keyword ] = $v; |
|
697
|
|
|
} |
|
698
|
|
|
break; |
|
699
|
|
View Code Duplication |
case 'VEVENT': |
|
700
|
|
|
if ( 'EXDATE' == $keyword ) { |
|
701
|
|
|
$this->cal[ $component ][ $this->event_count - 1 ][ $keyword ][] = $v; |
|
702
|
|
|
} else { |
|
703
|
|
|
$this->cal[ $component ][ $this->event_count - 1 ][ $keyword ] = $v; |
|
704
|
|
|
} |
|
705
|
|
|
break; |
|
706
|
|
|
default: |
|
707
|
|
|
$this->cal[ $component ][ $keyword ] = $v; |
|
708
|
|
|
break; |
|
709
|
|
|
} |
|
710
|
|
|
} |
|
711
|
|
|
$this->last_keyword = $keyword; |
|
712
|
|
|
} |
|
713
|
|
|
|
|
714
|
|
|
/** |
|
715
|
|
|
* Escape strings with wp_kses, allow links |
|
716
|
|
|
* |
|
717
|
|
|
* @param string $string (default: '') |
|
718
|
|
|
* @return string |
|
719
|
|
|
*/ |
|
720
|
|
|
public function escape( $string = '' ) { |
|
721
|
|
|
// Unfold content lines per RFC 5545 |
|
722
|
|
|
$string = str_replace( "\n\t", '', $string ); |
|
723
|
|
|
$string = str_replace( "\n ", '', $string ); |
|
724
|
|
|
|
|
725
|
|
|
$allowed_html = array( |
|
726
|
|
|
'a' => array( |
|
727
|
|
|
'href' => array(), |
|
728
|
|
|
'title' => array() |
|
729
|
|
|
) |
|
730
|
|
|
); |
|
731
|
|
|
|
|
732
|
|
|
$allowed_tags = ''; |
|
733
|
|
|
foreach ( array_keys( $allowed_html ) as $tag ) { |
|
734
|
|
|
$allowed_tags .= "<{$tag}>"; |
|
735
|
|
|
} |
|
736
|
|
|
|
|
737
|
|
|
// Running strip_tags() first with allowed tags to get rid of remaining gallery markup, etc |
|
738
|
|
|
// because wp_kses() would only htmlentity'fy that. Then still running wp_kses(), for extra |
|
739
|
|
|
// safety and good measure. |
|
740
|
|
|
return wp_kses( strip_tags( $string, $allowed_tags ), $allowed_html ); |
|
741
|
|
|
} |
|
742
|
|
|
|
|
743
|
|
|
/** |
|
744
|
|
|
* Render the events |
|
745
|
|
|
* |
|
746
|
|
|
* @param string $url (default: '') |
|
747
|
|
|
* @param string $context (default: 'widget') or 'shortcode' |
|
|
|
|
|
|
748
|
|
|
* @return mixed bool|string false on failure, rendered HTML string on success. |
|
749
|
|
|
*/ |
|
750
|
|
|
public function render( $url = '', $args = array() ) { |
|
751
|
|
|
|
|
752
|
|
|
$args = wp_parse_args( $args, array( |
|
753
|
|
|
'context' => 'widget', |
|
754
|
|
|
'number' => 5 |
|
755
|
|
|
) ); |
|
756
|
|
|
|
|
757
|
|
|
$events = $this->get_events( $url, $args['number'] ); |
|
758
|
|
|
$events = $this->apply_timezone_offset( $events ); |
|
759
|
|
|
|
|
760
|
|
|
if ( empty( $events ) ) |
|
761
|
|
|
return false; |
|
762
|
|
|
|
|
763
|
|
|
ob_start(); |
|
764
|
|
|
|
|
765
|
|
|
if ( 'widget' == $args['context'] ) : ?> |
|
766
|
|
|
<ul class="upcoming-events"> |
|
767
|
|
|
<?php foreach ( $events as $event ) : ?> |
|
768
|
|
|
<li> |
|
769
|
|
|
<strong class="event-summary"><?php echo $this->escape( stripslashes( $event['SUMMARY'] ) ); ?></strong> |
|
770
|
|
|
<span class="event-when"><?php echo $this->formatted_date( $event ); ?></span> |
|
771
|
|
View Code Duplication |
<?php if ( ! empty( $event['LOCATION'] ) ) : ?> |
|
772
|
|
|
<span class="event-location"><?php echo $this->escape( stripslashes( $event['LOCATION'] ) ); ?></span> |
|
773
|
|
|
<?php endif; ?> |
|
774
|
|
View Code Duplication |
<?php if ( ! empty( $event['DESCRIPTION'] ) ) : ?> |
|
775
|
|
|
<span class="event-description"><?php echo wp_trim_words( $this->escape( stripcslashes( $event['DESCRIPTION'] ) ) ); ?></span> |
|
776
|
|
|
<?php endif; ?> |
|
777
|
|
|
</li> |
|
778
|
|
|
<?php endforeach; ?> |
|
779
|
|
|
</ul> |
|
780
|
|
|
<?php endif; |
|
781
|
|
|
|
|
782
|
|
|
if ( 'shortcode' == $args['context'] ) : ?> |
|
783
|
|
|
<table class="upcoming-events"> |
|
784
|
|
|
<thead> |
|
785
|
|
|
<tr> |
|
786
|
|
|
<th><?php esc_html_e( 'Location', 'jetpack' ); ?></th> |
|
787
|
|
|
<th><?php esc_html_e( 'When', 'jetpack' ); ?></th> |
|
788
|
|
|
<th><?php esc_html_e( 'Summary', 'jetpack' ); ?></th> |
|
789
|
|
|
<th><?php esc_html_e( 'Description', 'jetpack' ); ?></th> |
|
790
|
|
|
</tr> |
|
791
|
|
|
</thead> |
|
792
|
|
|
<tbody> |
|
793
|
|
|
<?php foreach ( $events as $event ) : ?> |
|
794
|
|
|
<tr> |
|
795
|
|
|
<td><?php echo empty( $event['LOCATION'] ) ? ' ' : $this->escape( stripslashes( $event['LOCATION'] ) ); ?></td> |
|
796
|
|
|
<td><?php echo $this->formatted_date( $event ); ?></td> |
|
797
|
|
|
<td><?php echo empty( $event['SUMMARY'] ) ? ' ' : $this->escape( stripslashes( $event['SUMMARY'] ) ); ?></td> |
|
798
|
|
|
<td><?php echo empty( $event['DESCRIPTION'] ) ? ' ' : wp_trim_words( $this->escape( stripcslashes( $event['DESCRIPTION'] ) ) ); ?></td> |
|
799
|
|
|
</tr> |
|
800
|
|
|
<?php endforeach; ?> |
|
801
|
|
|
</tbody> |
|
802
|
|
|
</table> |
|
803
|
|
|
<?php endif; |
|
804
|
|
|
|
|
805
|
|
|
$rendered = ob_get_clean(); |
|
806
|
|
|
|
|
807
|
|
|
if ( empty( $rendered ) ) |
|
808
|
|
|
return false; |
|
809
|
|
|
|
|
810
|
|
|
return $rendered; |
|
811
|
|
|
} |
|
812
|
|
|
|
|
813
|
|
|
public function formatted_date( $event ) { |
|
814
|
|
|
|
|
815
|
|
|
$date_format = get_option( 'date_format' ); |
|
816
|
|
|
$time_format = get_option( 'time_format' ); |
|
817
|
|
|
$start = strtotime( $event['DTSTART'] ); |
|
818
|
|
|
$end = isset( $event['DTEND'] ) ? strtotime( $event['DTEND'] ) : false; |
|
819
|
|
|
|
|
820
|
|
|
$all_day = ( 8 == strlen( $event['DTSTART'] ) ); |
|
821
|
|
|
|
|
822
|
|
|
if ( !$all_day && $this->timezone ) { |
|
823
|
|
|
try { |
|
824
|
|
|
$start_time = new DateTime( $event['DTSTART'] ); |
|
825
|
|
|
$timezone_offset = $this->timezone->getOffset( $start_time ); |
|
826
|
|
|
$start += $timezone_offset; |
|
827
|
|
|
|
|
828
|
|
|
if ( $end ) { |
|
|
|
|
|
|
829
|
|
|
$end += $timezone_offset; |
|
830
|
|
|
} |
|
831
|
|
|
} catch ( Exception $e ) { |
|
832
|
|
|
// Invalid argument to DateTime |
|
833
|
|
|
} |
|
834
|
|
|
} |
|
835
|
|
|
$single_day = $end ? ( $end - $start ) <= DAY_IN_SECONDS : true; |
|
836
|
|
|
|
|
837
|
|
|
/* Translators: Date and time */ |
|
838
|
|
|
$date_with_time = __( '%1$s at %2$s' , 'jetpack' ); |
|
839
|
|
|
/* Translators: Two dates with a separator */ |
|
840
|
|
|
$two_dates = __( '%1$s – %2$s' , 'jetpack' ); |
|
841
|
|
|
|
|
842
|
|
|
// we'll always have the start date. Maybe with time |
|
843
|
|
View Code Duplication |
if ( $all_day ) |
|
844
|
|
|
$date = date_i18n( $date_format, $start ); |
|
845
|
|
|
else |
|
846
|
|
|
$date = sprintf( $date_with_time, date_i18n( $date_format, $start ), date_i18n( $time_format, $start ) ); |
|
847
|
|
|
|
|
848
|
|
|
// single day, timed |
|
849
|
|
|
if ( $single_day && ! $all_day && false !== $end ) |
|
850
|
|
|
$date = sprintf( $two_dates, $date, date_i18n( $time_format, $end ) ); |
|
851
|
|
|
|
|
852
|
|
|
// multi-day |
|
853
|
|
|
if ( ! $single_day ) { |
|
854
|
|
|
|
|
855
|
|
View Code Duplication |
if ( $all_day ) { |
|
856
|
|
|
// DTEND for multi-day events represents "until", not "including", so subtract one minute |
|
857
|
|
|
$end_date = date_i18n( $date_format, $end - 60 ); |
|
858
|
|
|
} else { |
|
859
|
|
|
$end_date = sprintf( $date_with_time, date_i18n( $date_format, $end ), date_i18n( $time_format, $end ) ); |
|
860
|
|
|
} |
|
861
|
|
|
|
|
862
|
|
|
$date = sprintf( $two_dates, $date, $end_date ); |
|
863
|
|
|
|
|
864
|
|
|
} |
|
865
|
|
|
|
|
866
|
|
|
return $date; |
|
867
|
|
|
} |
|
868
|
|
|
|
|
869
|
|
|
protected function sort_by_recent( $list ) { |
|
870
|
|
|
$dates = $sorted_list = array(); |
|
871
|
|
|
|
|
872
|
|
|
foreach ( $list as $key => $row ) { |
|
873
|
|
|
$date = $row['DTSTART']; |
|
874
|
|
|
// pad some time onto an all day date |
|
875
|
|
|
if ( 8 === strlen( $date ) ) |
|
876
|
|
|
$date .= 'T000000Z'; |
|
877
|
|
|
$dates[$key] = $date; |
|
878
|
|
|
} |
|
879
|
|
|
asort( $dates ); |
|
880
|
|
|
foreach( $dates as $key => $value ) { |
|
881
|
|
|
$sorted_list[$key] = $list[$key]; |
|
882
|
|
|
} |
|
883
|
|
|
unset($list); |
|
884
|
|
|
return $sorted_list; |
|
885
|
|
|
} |
|
886
|
|
|
|
|
887
|
|
|
} |
|
888
|
|
|
|
|
889
|
|
|
|
|
890
|
|
|
/** |
|
891
|
|
|
* Wrapper function for iCalendarReader->get_events() |
|
892
|
|
|
* |
|
893
|
|
|
* @param string $url (default: '') |
|
894
|
|
|
* @return array |
|
895
|
|
|
*/ |
|
896
|
|
|
function icalendar_get_events( $url = '', $count = 5 ) { |
|
897
|
|
|
// Find your calendar's address http://support.google.com/calendar/bin/answer.py?hl=en&answer=37103 |
|
898
|
|
|
$ical = new iCalendarReader(); |
|
899
|
|
|
return $ical->get_events( $url, $count ); |
|
900
|
|
|
} |
|
901
|
|
|
|
|
902
|
|
|
/** |
|
903
|
|
|
* Wrapper function for iCalendarReader->render() |
|
904
|
|
|
* |
|
905
|
|
|
* @param string $url (default: '') |
|
906
|
|
|
* @param string $context (default: 'widget') or 'shortcode' |
|
|
|
|
|
|
907
|
|
|
* @return mixed bool|string false on failure, rendered HTML string on success. |
|
908
|
|
|
*/ |
|
909
|
|
|
function icalendar_render_events( $url = '', $args = array() ) { |
|
910
|
|
|
$ical = new iCalendarReader(); |
|
911
|
|
|
return $ical->render( $url, $args ); |
|
912
|
|
|
} |
|
913
|
|
|
|
Automattic /
jetpack
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Adding a
@returnannotation to a constructor is not recommended, since a constructor does not have a meaningful return value.Please refer to the PHP core documentation on constructors.