wp_reschedule_event( int $timestamp, string $recurrence, string $hook, array $args = array() )

重新安排重复发生的事件。
Reschedules a recurring event.

目录锚点：#说明#参数#源码

说明（Description）

主要用于内部使用，它获取以前运行的重复事件的时间戳，并将其重新安排为下次运行。要更改即将发生的计划事件，请使用wp_schedule_event（）更改重复频率。

参数（Parameters）

源码（Source）

/**
 * Reschedule a recurring event.
 *
 * @since 2.1.0
 *
 * @param int $timestamp Timestamp for when to run the event.
 * @param string $recurrence How often the event should recur.
 * @param string $hook Action hook to execute when cron is run.
 * @param array $args Optional. Arguments to pass to the hook's callback function.
 * @return false|void False when does not schedule event.
 */
function wp_reschedule_event( $timestamp, $recurrence, $hook, $args = array() ) {
	$crons = _get_cron_array();
	$schedules = wp_get_schedules();
	$key = md5( serialize( $args ) );
	$interval = 0;

	// First we try to get it from the schedule
	if ( isset( $schedules[ $recurrence ] ) ) {
		$interval = $schedules[ $recurrence ]['interval'];
	}
	// Now we try to get it from the saved interval in case the schedule disappears
	if ( 0 == $interval ) {
		$interval = $crons[ $timestamp ][ $hook ][ $key ]['interval'];
	}
	// Now we assume something is wrong and fail to schedule
	if ( 0 == $interval ) {
		return false;
	}

	$now = time();

	if ( $timestamp >= $now ) {
		$timestamp = $now + $interval;
	} else {
		$timestamp = $now + ( $interval - ( ( $now - $timestamp ) % $interval ) );
	}

	wp_schedule_event( $timestamp, $recurrence, $hook, $args );
}