public function getEffectiveTriggerTime()
    {
        $trigger = $this->TRIGGER;
        if (!isset($trigger['VALUE']) || 'DURATION' === strtoupper($trigger['VALUE'])) {
            $triggerDuration = VObject\DateTimeParser::parseDuration($this->TRIGGER);
            $related = (isset($trigger['RELATED']) && 'END' == strtoupper($trigger['RELATED'])) ? 'END' : 'START';

            $parentComponent = $this->parent;
            if ('START' === $related) {
                if ('VTODO' === $parentComponent->name) {
                    $propName = 'DUE';
                } else {
                    $propName = 'DTSTART';
                }

                $effectiveTrigger = $parentComponent->$propName->getDateTime();
                $effectiveTrigger = $effectiveTrigger->add($triggerDuration);
            } else {
                if ('VTODO' === $parentComponent->name) {
                    $endProp = 'DUE';
                } elseif ('VEVENT' === $parentComponent->name) {
                    $endProp = 'DTEND';
                } else {
                    throw new InvalidDataException('time-range filters on VALARM components are only supported when they are a child of VTODO or VEVENT');
                }

                if (isset($parentComponent->$endProp)) {
                    $effectiveTrigger = $parentComponent->$endProp->getDateTime();
                    $effectiveTrigger = $effectiveTrigger->add($triggerDuration);
                } elseif (isset($parentComponent->DURATION)) {
                    $effectiveTrigger = $parentComponent->DTSTART->getDateTime();
                    $duration = VObject\DateTimeParser::parseDuration($parentComponent->DURATION);
                    $effectiveTrigger = $effectiveTrigger->add($duration);
                    $effectiveTrigger = $effectiveTrigger->add($triggerDuration);
                } else {
                    $effectiveTrigger = $parentComponent->DTSTART->getDateTime();
                    $effectiveTrigger = $effectiveTrigger->add($triggerDuration);
                }
            }
        } else {
            $effectiveTrigger = $trigger->getDateTime();
        }

        return $effectiveTrigger;
    }
public function getEffectiveTriggerTime()
    {
        $trigger = $this->TRIGGER;
        if (!isset($trigger['VALUE']) || 'DURATION' === strtoupper($trigger['VALUE'])) {
            $triggerDuration = VObject\DateTimeParser::parseDuration($this->TRIGGER);
            $related = (isset($trigger['RELATED']) && 'END' == strtoupper($trigger['RELATED'])) ? 'END' : 'START';

            $parentComponent = $this->parent;
            if ('START' === $related) {
                if ('VTODO' === $parentComponent->name) {
                    $propName = 'DUE';
                } else {
                    $propName = 'DTSTART';
                }

                $effectiveTrigger = $parentComponent->$propName->getDateTime();
                $effectiveTrigger = $effectiveTrigger->add($triggerDuration);
            } else {
                if ('VTODO' === $parentComponent->name) {
                    $endProp = 'DUE';
                } elseif ('VEVENT' === $parentComponent->name) {
                    $endProp = 'DTEND';
                } else {
                    throw new InvalidDataException('time-range filters on VALARM components are only supported when they are a child of VTODO or VEVENT');
                }

                if (isset($parentComponent->$endProp)) {
                    $effectiveTrigger = $parentComponent->$endProp->getDateTime();
                    $effectiveTrigger = $effectiveTrigger->add($triggerDuration);
                } elseif (isset($parentComponent->DURATION)) {
                    $effectiveTrigger = $parentComponent->DTSTART->getDateTime();
                    $duration = VObject\DateTimeParser::parseDuration($parentComponent->DURATION);
                    $effectiveTrigger = $effectiveTrigger->add($duration);
                    $effectiveTrigger = $effectiveTrigger->add($triggerDuration);
                } else {
                    $effectiveTrigger = $parentComponent->DTSTART->getDateTime();
                    $effectiveTrigger = $effectiveTrigger->add($triggerDuration);
                }
            }
        } else {
            $effectiveTrigger = $trigger->getDateTime();
        }

        return $effectiveTrigger;
    }
public function getEffectiveTriggerTime ( ) { $ trigger = $ this -> TRIGGER ; if ( ! isset ( $ trigger [ 'VALUE' ] ) || 'DURATION' === strtoupper ( $ trigger [ 'VALUE' ] ) ) { $ triggerDuration = VObject \ DateTimeParser :: parseDuration ( $ this -> TRIGGER ) ; $ related = ( isset ( $ trigger [ 'RELATED' ] ) && 'END' == strtoupper ( $ trigger [ 'RELATED' ] ) ) ? 'END' : 'START' ; $ parentComponent = $ this -> parent ; if ( 'START' === $ related ) { if ( 'VTODO' === $ parentComponent -> name ) { $ propName = 'DUE' ; } else { $ propName = 'DTSTART' ; } $ effectiveTrigger = $ parentComponent -> $ propName -> getDateTime ( ) ; $ effectiveTrigger = $ effectiveTrigger -> add ( $ triggerDuration ) ; } else { if ( 'VTODO' === $ parentComponent -> name ) { $ endProp = 'DUE' ; } elseif ( 'VEVENT' === $ parentComponent -> name ) { $ endProp = 'DTEND' ; } else { throw new InvalidDataException ( 'time-range filters on VALARM components are only supported when they are a child of VTODO or VEVENT' ) ; } if ( isset ( $ parentComponent -> $ endProp ) ) { $ effectiveTrigger = $ parentComponent -> $ endProp -> getDateTime ( ) ; $ effectiveTrigger = $ effectiveTrigger -> add ( $ triggerDuration ) ; } elseif ( isset ( $ parentComponent -> DURATION ) ) { $ effectiveTrigger = $ parentComponent -> DTSTART -> getDateTime ( ) ; $ duration = VObject \ DateTimeParser :: parseDuration ( $ parentComponent -> DURATION ) ; $ effectiveTrigger = $ effectiveTrigger -> add ( $ duration ) ; $ effectiveTrigger = $ effectiveTrigger -> add ( $ triggerDuration ) ; } else { $ effectiveTrigger = $ parentComponent -> DTSTART -> getDateTime ( ) ; $ effectiveTrigger = $ effectiveTrigger -> add ( $ triggerDuration ) ; } } } else { $ effectiveTrigger = $ trigger -> getDateTime ( ) ; } return $ effectiveTrigger ; }
Returns a DateTime object when this alarm is going to trigger.

This ignores repeated alarm, only the first trigger is returned.

@return DateTimeImmutable
Returns a DateTime object when this alarm is going to trigger .