山に住む一家は千個の巣から蜂蜜を収穫し、幼い子供たちは新しい畑で5エーカーの野菜を栽培している。__wakeup() for details.
**/
private $timestamp = NULL;
/**
* @param DateTime $after
*
* @return DateTime|null
*/
public function calculate_next( DateTime $after ) {
return null;
}
/**
* @return bool
*/
public function is_recurring() {
return false;
}
/**
* Serialize schedule with data required prior to AS 3.0.0
*
* Prior to Action Scheduler 3.0.0, schedules used different property names to refer
* to equivalent data. For example, ActionScheduler_IntervalSchedule::start_timestamp
* was the same as ActionScheduler_SimpleSchedule::timestamp. Action Scheduler 3.0.0
* aligned properties and property names for better inheritance. To guard against the
* scheduled date for single actions always being seen as "now" if downgrading to
* Action Scheduler < 3.0.0, we need to also store the data with the old property names
* so if it's unserialized in AS < 3.0, the schedule doesn't end up with a null recurrence.
*
* @return array
*/
public function __sleep() {
$sleep_params = parent::__sleep();
$this->timestamp = $this->scheduled_timestamp;
return array_merge( $sleep_params, array(
'timestamp',
) );
}
/**
* Unserialize recurring schedules serialized/stored prior to AS 3.0.0
*
* Prior to Action Scheduler 3.0.0, schedules used different property names to refer
* to equivalent data. For example, ActionScheduler_IntervalSchedule::start_timestamp
* was the