mirror of
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aaf99e6913
WordPress' code just... wasn't. This is now dealt with. Props jrf, pento, netweb, GaryJ, jdgrimes, westonruter, Greg Sherwood from PHPCS, and everyone who's ever contributed to WPCS and PHPCS. Fixes #41057. Built from https://develop.svn.wordpress.org/trunk@42343 git-svn-id: http://core.svn.wordpress.org/trunk@42172 1a063a9b-81f0-0310-95a4-ce76da25c4cd
599 lines
18 KiB
PHP
599 lines
18 KiB
PHP
<?php
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/**
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* WordPress Cron API
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*
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* @package WordPress
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*/
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/**
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* Schedules an event to run only once.
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*
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* Schedules a hook which will be triggered by WordPress at the specified time.
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* The action will trigger when someone visits your WordPress site if the scheduled
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* time has passed.
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*
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* Note that scheduling an event to occur within 10 minutes of an existing event
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* with the same action hook will be ignored unless you pass unique `$args` values
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* for each scheduled event.
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*
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* Use wp_next_scheduled() to prevent duplicate events.
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*
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* Use wp_schedule_event() to schedule a recurring event.
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*
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* @since 2.1.0
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* @link https://codex.wordpress.org/Function_Reference/wp_schedule_single_event
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*
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* @param int $timestamp Unix timestamp (UTC) for when to next run the event.
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* @param string $hook Action hook to execute when the event is run.
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* @param array $args Optional. Array containing each separate argument to pass to the hook's callback function.
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* @return false|void False if the event did not get scheduled.
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*/
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function wp_schedule_single_event( $timestamp, $hook, $args = array() ) {
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// Make sure timestamp is a positive integer
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if ( ! is_numeric( $timestamp ) || $timestamp <= 0 ) {
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return false;
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}
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// Don't schedule a duplicate if there's already an identical event due within 10 minutes of it
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$next = wp_next_scheduled( $hook, $args );
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if ( $next && abs( $next - $timestamp ) <= 10 * MINUTE_IN_SECONDS ) {
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return false;
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}
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$crons = _get_cron_array();
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$event = (object) array(
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'hook' => $hook,
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'timestamp' => $timestamp,
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'schedule' => false,
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'args' => $args,
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);
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/**
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* Filters a single event before it is scheduled.
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*
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* @since 3.1.0
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*
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* @param stdClass $event {
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* An object containing an event's data.
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*
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* @type string $hook Action hook to execute when the event is run.
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* @type int $timestamp Unix timestamp (UTC) for when to next run the event.
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* @type string|false $schedule How often the event should subsequently recur.
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* @type array $args Array containing each separate argument to pass to the hook's callback function.
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* @type int $interval The interval time in seconds for the schedule. Only present for recurring events.
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* }
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*/
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$event = apply_filters( 'schedule_event', $event );
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// A plugin disallowed this event
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if ( ! $event ) {
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return false;
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}
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$key = md5( serialize( $event->args ) );
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$crons[ $event->timestamp ][ $event->hook ][ $key ] = array(
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'schedule' => $event->schedule,
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'args' => $event->args,
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);
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uksort( $crons, 'strnatcasecmp' );
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_set_cron_array( $crons );
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}
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/**
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* Schedules a recurring event.
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*
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* Schedules a hook which will be triggered by WordPress at the specified interval.
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* The action will trigger when someone visits your WordPress site if the scheduled
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* time has passed.
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*
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* Valid values for the recurrence are 'hourly', 'daily', and 'twicedaily'. These can
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* be extended using the {@see 'cron_schedules'} filter in wp_get_schedules().
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*
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* Note that scheduling an event to occur within 10 minutes of an existing event
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* with the same action hook will be ignored unless you pass unique `$args` values
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* for each scheduled event.
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*
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* Use wp_next_scheduled() to prevent duplicate events.
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*
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* Use wp_schedule_single_event() to schedule a non-recurring event.
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*
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* @since 2.1.0
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* @link https://codex.wordpress.org/Function_Reference/wp_schedule_event
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*
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* @param int $timestamp Unix timestamp (UTC) for when to next run the event.
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* @param string $recurrence How often the event should subsequently recur. See wp_get_schedules() for accepted values.
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* @param string $hook Action hook to execute when the event is run.
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* @param array $args Optional. Array containing each separate argument to pass to the hook's callback function.
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* @return false|void False if the event did not get scheduled.
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*/
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function wp_schedule_event( $timestamp, $recurrence, $hook, $args = array() ) {
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// Make sure timestamp is a positive integer
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if ( ! is_numeric( $timestamp ) || $timestamp <= 0 ) {
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return false;
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}
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$crons = _get_cron_array();
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$schedules = wp_get_schedules();
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if ( ! isset( $schedules[ $recurrence ] ) ) {
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return false;
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}
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$event = (object) array(
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'hook' => $hook,
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'timestamp' => $timestamp,
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'schedule' => $recurrence,
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'args' => $args,
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'interval' => $schedules[ $recurrence ]['interval'],
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);
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/** This filter is documented in wp-includes/cron.php */
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$event = apply_filters( 'schedule_event', $event );
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// A plugin disallowed this event
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if ( ! $event ) {
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return false;
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}
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$key = md5( serialize( $event->args ) );
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$crons[ $event->timestamp ][ $event->hook ][ $key ] = array(
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'schedule' => $event->schedule,
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'args' => $event->args,
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'interval' => $event->interval,
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);
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uksort( $crons, 'strnatcasecmp' );
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_set_cron_array( $crons );
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}
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/**
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* Reschedules a recurring event.
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*
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* @since 2.1.0
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*
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* @param int $timestamp Unix timestamp (UTC) for when to next run the event.
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* @param string $recurrence How often the event should subsequently recur. See wp_get_schedules() for accepted values.
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* @param string $hook Action hook to execute when the event is run.
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* @param array $args Optional. Array containing each separate argument to pass to the hook's callback function.
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* @return false|void False if the event did not get rescheduled.
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*/
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function wp_reschedule_event( $timestamp, $recurrence, $hook, $args = array() ) {
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// Make sure timestamp is a positive integer
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if ( ! is_numeric( $timestamp ) || $timestamp <= 0 ) {
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return false;
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}
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$crons = _get_cron_array();
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$schedules = wp_get_schedules();
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$key = md5( serialize( $args ) );
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$interval = 0;
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// First we try to get it from the schedule
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if ( isset( $schedules[ $recurrence ] ) ) {
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$interval = $schedules[ $recurrence ]['interval'];
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}
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// Now we try to get it from the saved interval in case the schedule disappears
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if ( 0 == $interval ) {
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$interval = $crons[ $timestamp ][ $hook ][ $key ]['interval'];
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}
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// Now we assume something is wrong and fail to schedule
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if ( 0 == $interval ) {
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return false;
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}
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$now = time();
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if ( $timestamp >= $now ) {
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$timestamp = $now + $interval;
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} else {
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$timestamp = $now + ( $interval - ( ( $now - $timestamp ) % $interval ) );
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}
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wp_schedule_event( $timestamp, $recurrence, $hook, $args );
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}
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/**
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* Unschedule a previously scheduled event.
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*
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* The $timestamp and $hook parameters are required so that the event can be
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* identified.
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*
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* @since 2.1.0
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*
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* @param int $timestamp Unix timestamp (UTC) of the event.
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* @param string $hook Action hook of the event.
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* @param array $args Optional. Array containing each separate argument to pass to the hook's callback function.
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* Although not passed to a callback, these arguments are used to uniquely identify the
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* event, so they should be the same as those used when originally scheduling the event.
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* @return false|void False if the event did not get unscheduled.
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*/
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function wp_unschedule_event( $timestamp, $hook, $args = array() ) {
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// Make sure timestamp is a positive integer
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if ( ! is_numeric( $timestamp ) || $timestamp <= 0 ) {
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return false;
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}
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$crons = _get_cron_array();
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$key = md5( serialize( $args ) );
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unset( $crons[ $timestamp ][ $hook ][ $key ] );
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if ( empty( $crons[ $timestamp ][ $hook ] ) ) {
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unset( $crons[ $timestamp ][ $hook ] );
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}
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if ( empty( $crons[ $timestamp ] ) ) {
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unset( $crons[ $timestamp ] );
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}
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_set_cron_array( $crons );
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}
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/**
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* Unschedules all events attached to the hook with the specified arguments.
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*
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* @since 2.1.0
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*
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* @param string $hook Action hook, the execution of which will be unscheduled.
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* @param array $args Optional. Arguments that were to be passed to the hook's callback function.
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*/
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function wp_clear_scheduled_hook( $hook, $args = array() ) {
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// Backward compatibility
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// Previously this function took the arguments as discrete vars rather than an array like the rest of the API
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if ( ! is_array( $args ) ) {
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_deprecated_argument( __FUNCTION__, '3.0.0', __( 'This argument has changed to an array to match the behavior of the other cron functions.' ) );
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$args = array_slice( func_get_args(), 1 );
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}
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// This logic duplicates wp_next_scheduled()
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// It's required due to a scenario where wp_unschedule_event() fails due to update_option() failing,
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// and, wp_next_scheduled() returns the same schedule in an infinite loop.
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$crons = _get_cron_array();
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if ( empty( $crons ) ) {
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return;
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}
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$key = md5( serialize( $args ) );
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foreach ( $crons as $timestamp => $cron ) {
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if ( isset( $cron[ $hook ][ $key ] ) ) {
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wp_unschedule_event( $timestamp, $hook, $args );
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}
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}
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}
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/**
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* Unschedules all events attached to the hook.
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*
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* Can be useful for plugins when deactivating to clean up the cron queue.
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*
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* @since 4.9.0
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*
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* @param string $hook Action hook, the execution of which will be unscheduled.
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*/
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function wp_unschedule_hook( $hook ) {
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$crons = _get_cron_array();
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foreach ( $crons as $timestamp => $args ) {
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unset( $crons[ $timestamp ][ $hook ] );
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if ( empty( $crons[ $timestamp ] ) ) {
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unset( $crons[ $timestamp ] );
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}
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}
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_set_cron_array( $crons );
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}
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/**
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* Retrieve the next timestamp for an event.
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*
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* @since 2.1.0
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*
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* @param string $hook Action hook of the event.
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* @param array $args Optional. Array containing each separate argument to pass to the hook's callback function.
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* Although not passed to a callback, these arguments are used to uniquely identify the
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* event, so they should be the same as those used when originally scheduling the event.
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* @return false|int The Unix timestamp of the next time the event will occur. False if the event doesn't exist.
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*/
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function wp_next_scheduled( $hook, $args = array() ) {
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$crons = _get_cron_array();
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$key = md5( serialize( $args ) );
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if ( empty( $crons ) ) {
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return false;
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}
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foreach ( $crons as $timestamp => $cron ) {
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if ( isset( $cron[ $hook ][ $key ] ) ) {
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return $timestamp;
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}
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}
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return false;
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}
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/**
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* Sends a request to run cron through HTTP request that doesn't halt page loading.
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*
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* @since 2.1.0
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*
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* @param int $gmt_time Optional. Unix timestamp (UTC). Default 0 (current time is used).
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*/
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function spawn_cron( $gmt_time = 0 ) {
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if ( ! $gmt_time ) {
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$gmt_time = microtime( true );
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}
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if ( defined( 'DOING_CRON' ) || isset( $_GET['doing_wp_cron'] ) ) {
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return;
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}
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/*
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* Get the cron lock, which is a Unix timestamp of when the last cron was spawned
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* and has not finished running.
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*
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* Multiple processes on multiple web servers can run this code concurrently,
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* this lock attempts to make spawning as atomic as possible.
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*/
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$lock = get_transient( 'doing_cron' );
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if ( $lock > $gmt_time + 10 * MINUTE_IN_SECONDS ) {
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$lock = 0;
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}
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// don't run if another process is currently running it or more than once every 60 sec.
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if ( $lock + WP_CRON_LOCK_TIMEOUT > $gmt_time ) {
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return;
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}
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//sanity check
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$crons = _get_cron_array();
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if ( ! is_array( $crons ) ) {
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return;
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}
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$keys = array_keys( $crons );
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if ( isset( $keys[0] ) && $keys[0] > $gmt_time ) {
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return;
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}
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if ( defined( 'ALTERNATE_WP_CRON' ) && ALTERNATE_WP_CRON ) {
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if ( 'GET' !== $_SERVER['REQUEST_METHOD'] || defined( 'DOING_AJAX' ) || defined( 'XMLRPC_REQUEST' ) ) {
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return;
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}
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$doing_wp_cron = sprintf( '%.22F', $gmt_time );
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set_transient( 'doing_cron', $doing_wp_cron );
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ob_start();
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wp_redirect( add_query_arg( 'doing_wp_cron', $doing_wp_cron, wp_unslash( $_SERVER['REQUEST_URI'] ) ) );
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echo ' ';
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// flush any buffers and send the headers
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while ( @ob_end_flush() ) {
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}
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flush();
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WP_DEBUG ? include_once( ABSPATH . 'wp-cron.php' ) : @include_once( ABSPATH . 'wp-cron.php' );
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return;
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}
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// Set the cron lock with the current unix timestamp, when the cron is being spawned.
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$doing_wp_cron = sprintf( '%.22F', $gmt_time );
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set_transient( 'doing_cron', $doing_wp_cron );
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/**
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* Filters the cron request arguments.
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*
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* @since 3.5.0
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* @since 4.5.0 The `$doing_wp_cron` parameter was added.
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*
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* @param array $cron_request_array {
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* An array of cron request URL arguments.
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*
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* @type string $url The cron request URL.
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* @type int $key The 22 digit GMT microtime.
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* @type array $args {
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* An array of cron request arguments.
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*
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* @type int $timeout The request timeout in seconds. Default .01 seconds.
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* @type bool $blocking Whether to set blocking for the request. Default false.
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* @type bool $sslverify Whether SSL should be verified for the request. Default false.
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* }
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* }
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* @param string $doing_wp_cron The unix timestamp of the cron lock.
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*/
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$cron_request = apply_filters(
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'cron_request', array(
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'url' => add_query_arg( 'doing_wp_cron', $doing_wp_cron, site_url( 'wp-cron.php' ) ),
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'key' => $doing_wp_cron,
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'args' => array(
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'timeout' => 0.01,
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'blocking' => false,
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/** This filter is documented in wp-includes/class-wp-http-streams.php */
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'sslverify' => apply_filters( 'https_local_ssl_verify', false ),
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),
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), $doing_wp_cron
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);
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wp_remote_post( $cron_request['url'], $cron_request['args'] );
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}
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/**
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* Run scheduled callbacks or spawn cron for all scheduled events.
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*
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* @since 2.1.0
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*/
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function wp_cron() {
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// Prevent infinite loops caused by lack of wp-cron.php
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if ( strpos( $_SERVER['REQUEST_URI'], '/wp-cron.php' ) !== false || ( defined( 'DISABLE_WP_CRON' ) && DISABLE_WP_CRON ) ) {
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return;
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}
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if ( false === $crons = _get_cron_array() ) {
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return;
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}
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$gmt_time = microtime( true );
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$keys = array_keys( $crons );
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if ( isset( $keys[0] ) && $keys[0] > $gmt_time ) {
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return;
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}
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$schedules = wp_get_schedules();
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foreach ( $crons as $timestamp => $cronhooks ) {
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if ( $timestamp > $gmt_time ) {
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break;
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}
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foreach ( (array) $cronhooks as $hook => $args ) {
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if ( isset( $schedules[ $hook ]['callback'] ) && ! call_user_func( $schedules[ $hook ]['callback'] ) ) {
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continue;
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}
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spawn_cron( $gmt_time );
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break 2;
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}
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}
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}
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/**
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* Retrieve supported event recurrence schedules.
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*
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* The default supported recurrences are 'hourly', 'twicedaily', and 'daily'. A plugin may
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* add more by hooking into the {@see 'cron_schedules'} filter. The filter accepts an array
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* of arrays. The outer array has a key that is the name of the schedule or for
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* example 'weekly'. The value is an array with two keys, one is 'interval' and
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* the other is 'display'.
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*
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* The 'interval' is a number in seconds of when the cron job should run. So for
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* 'hourly', the time is 3600 or 60*60. For weekly, the value would be
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* 60*60*24*7 or 604800. The value of 'interval' would then be 604800.
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*
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* The 'display' is the description. For the 'weekly' key, the 'display' would
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* be `__( 'Once Weekly' )`.
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*
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* For your plugin, you will be passed an array. you can easily add your
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* schedule by doing the following.
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*
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* // Filter parameter variable name is 'array'.
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* $array['weekly'] = array(
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* 'interval' => 604800,
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* 'display' => __( 'Once Weekly' )
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* );
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*
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* @since 2.1.0
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*
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* @return array
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*/
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function wp_get_schedules() {
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$schedules = array(
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'hourly' => array(
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'interval' => HOUR_IN_SECONDS,
|
|
'display' => __( 'Once Hourly' ),
|
|
),
|
|
'twicedaily' => array(
|
|
'interval' => 12 * HOUR_IN_SECONDS,
|
|
'display' => __( 'Twice Daily' ),
|
|
),
|
|
'daily' => array(
|
|
'interval' => DAY_IN_SECONDS,
|
|
'display' => __( 'Once Daily' ),
|
|
),
|
|
);
|
|
/**
|
|
* Filters the non-default cron schedules.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param array $new_schedules An array of non-default cron schedules. Default empty.
|
|
*/
|
|
return array_merge( apply_filters( 'cron_schedules', array() ), $schedules );
|
|
}
|
|
|
|
/**
|
|
* Retrieve the recurrence schedule for an event.
|
|
*
|
|
* @see wp_get_schedules() for available schedules.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $hook Action hook to identify the event.
|
|
* @param array $args Optional. Arguments passed to the event's callback function.
|
|
* @return string|false False, if no schedule. Schedule name on success.
|
|
*/
|
|
function wp_get_schedule( $hook, $args = array() ) {
|
|
$crons = _get_cron_array();
|
|
$key = md5( serialize( $args ) );
|
|
if ( empty( $crons ) ) {
|
|
return false;
|
|
}
|
|
foreach ( $crons as $timestamp => $cron ) {
|
|
if ( isset( $cron[ $hook ][ $key ] ) ) {
|
|
return $cron[ $hook ][ $key ]['schedule'];
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
//
|
|
// Private functions
|
|
//
|
|
|
|
/**
|
|
* Retrieve cron info array option.
|
|
*
|
|
* @since 2.1.0
|
|
* @access private
|
|
*
|
|
* @return false|array CRON info array.
|
|
*/
|
|
function _get_cron_array() {
|
|
$cron = get_option( 'cron' );
|
|
if ( ! is_array( $cron ) ) {
|
|
return false;
|
|
}
|
|
|
|
if ( ! isset( $cron['version'] ) ) {
|
|
$cron = _upgrade_cron_array( $cron );
|
|
}
|
|
|
|
unset( $cron['version'] );
|
|
|
|
return $cron;
|
|
}
|
|
|
|
/**
|
|
* Updates the CRON option with the new CRON array.
|
|
*
|
|
* @since 2.1.0
|
|
* @access private
|
|
*
|
|
* @param array $cron Cron info array from _get_cron_array().
|
|
*/
|
|
function _set_cron_array( $cron ) {
|
|
$cron['version'] = 2;
|
|
update_option( 'cron', $cron );
|
|
}
|
|
|
|
/**
|
|
* Upgrade a Cron info array.
|
|
*
|
|
* This function upgrades the Cron info array to version 2.
|
|
*
|
|
* @since 2.1.0
|
|
* @access private
|
|
*
|
|
* @param array $cron Cron info array from _get_cron_array().
|
|
* @return array An upgraded Cron info array.
|
|
*/
|
|
function _upgrade_cron_array( $cron ) {
|
|
if ( isset( $cron['version'] ) && 2 == $cron['version'] ) {
|
|
return $cron;
|
|
}
|
|
|
|
$new_cron = array();
|
|
|
|
foreach ( (array) $cron as $timestamp => $hooks ) {
|
|
foreach ( (array) $hooks as $hook => $args ) {
|
|
$key = md5( serialize( $args['args'] ) );
|
|
$new_cron[ $timestamp ][ $hook ][ $key ] = $args;
|
|
}
|
|
}
|
|
|
|
$new_cron['version'] = 2;
|
|
update_option( 'cron', $new_cron );
|
|
return $new_cron;
|
|
}
|