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Edit File : cron.php \| Size : 30.82 KB
<?php /** * WordPress Cron API * * @package WordPress / /* * Schedules an event to run only once. * * Schedules a hook which will be triggered by WordPress at the specified time. * The action will trigger when someone visits your WordPress site if the scheduled * time has passed. * * Note that scheduling an event to occur within 10 minutes of an existing event * with the same action hook will be ignored unless you pass unique `$args` values * for each scheduled event. * * Use wp_next_scheduled() to prevent duplicate events. * * Use wp_schedule_event() to schedule a recurring event. * * @since 2.1.0 * @since 5.1.0 Return value modified to boolean indicating success or failure, * {@see 'pre_schedule_event'} filter added to short-circuit the function. * * @link https://sitepad.com/docs/Function_Reference/wp_schedule_single_event * * @param int $timestamp Unix timestamp (UTC) for when to next run the event. * @param string $hook Action hook to execute when the event is run. * @param array $args Optional. Array containing each separate argument to pass to the hook's callback function. * @return bool True if event successfully scheduled. False for failure. / function wp_schedule_single_event( $timestamp, $hook, $args = array() ) { // Make sure timestamp is a positive integer if ( ! is_numeric( $timestamp ) \|\| $timestamp <= 0 ) { return false; } $event = (object) array( 'hook' => $hook, 'timestamp' => $timestamp, 'schedule' => false, 'args' => $args, ); /* * Filter to preflight or hijack scheduling an event. * * Returning a non-null value will short-circuit adding the event to the * cron array, causing the function to return the filtered value instead. * * Both single events and recurring events are passed through this filter; * single events have `$event->schedule` as false, whereas recurring events * have this set to a recurrence from wp_get_schedules(). Recurring * events also have the integer recurrence interval set as `$event->interval`. * * For plugins replacing wp-cron, it is recommended you check for an * identical event within ten minutes and apply the {@see 'schedule_event'} * filter to check if another plugin has disallowed the event before scheduling. * * Return true if the event was scheduled, false if not. * * @since 5.1.0 * * @param null\|bool $pre Value to return instead. Default null to continue adding the event. * @param stdClass $event { * An object containing an event's data. * * @type string $hook Action hook to execute when the event is run. * @type int $timestamp Unix timestamp (UTC) for when to next run the event. * @type string\|false $schedule How often the event should subsequently recur. * @type array $args Array containing each separate argument to pass to the hook's callback function. * @type int $interval The interval time in seconds for the schedule. Only present for recurring events. * } / $pre = apply_filters( 'pre_schedule_event', null, $event ); if ( null !== $pre ) { return $pre; } // Don't schedule a duplicate if there's already an identical event due within 10 minutes of it $next = wp_next_scheduled( $hook, $args ); if ( $next && abs( $next - $timestamp ) <= 10 MINUTE_IN_SECONDS ) { return false; } /** * Modify an event before it is scheduled. * * @since 3.1.0 * * @param stdClass $event { * An object containing an event's data. * * @type string $hook Action hook to execute when the event is run. * @type int $timestamp Unix timestamp (UTC) for when to next run the event. * @type string\|false $schedule How often the event should subsequently recur. * @type array $args Array containing each separate argument to pass to the hook's callback function. * @type int $interval The interval time in seconds for the schedule. Only present for recurring events. * } / $event = apply_filters( 'schedule_event', $event ); // A plugin disallowed this event if ( ! $event ) { return false; } $key = md5( serialize( $event->args ) ); $crons = _get_cron_array(); $crons[ $event->timestamp ][ $event->hook ][ $key ] = array( 'schedule' => $event->schedule, 'args' => $event->args, ); uksort( $crons, 'strnatcasecmp' ); return _set_cron_array( $crons ); } /* * Schedules a recurring event. * * Schedules a hook which will be triggered by WordPress at the specified interval. * The action will trigger when someone visits your WordPress site if the scheduled * time has passed. * * Valid values for the recurrence are 'hourly', 'daily', and 'twicedaily'. These can * be extended using the {@see 'cron_schedules'} filter in wp_get_schedules(). * * Note that scheduling an event to occur within 10 minutes of an existing event * with the same action hook will be ignored unless you pass unique `$args` values * for each scheduled event. * * Use wp_next_scheduled() to prevent duplicate events. * * Use wp_schedule_single_event() to schedule a non-recurring event. * * @since 2.1.0 * @since 5.1.0 Return value modified to boolean indicating success or failure, * {@see 'pre_schedule_event'} filter added to short-circuit the function. * * @link https://sitepad.com/docs/Function_Reference/wp_schedule_event * * @param int $timestamp Unix timestamp (UTC) for when to next run the event. * @param string $recurrence How often the event should subsequently recur. See wp_get_schedules() for accepted values. * @param string $hook Action hook to execute when the event is run. * @param array $args Optional. Array containing each separate argument to pass to the hook's callback function. * @return bool True if event successfully scheduled. False for failure. / function wp_schedule_event( $timestamp, $recurrence, $hook, $args = array() ) { // Make sure timestamp is a positive integer if ( ! is_numeric( $timestamp ) \|\| $timestamp <= 0 ) { return false; } $schedules = wp_get_schedules(); if ( ! isset( $schedules[ $recurrence ] ) ) { return false; } $event = (object) array( 'hook' => $hook, 'timestamp' => $timestamp, 'schedule' => $recurrence, 'args' => $args, 'interval' => $schedules[ $recurrence ]['interval'], ); /* This filter is documented in site-inc/cron.php / $pre = apply_filters( 'pre_schedule_event', null, $event ); if ( null !== $pre ) { return $pre; } /* This filter is documented in site-inc/cron.php / $event = apply_filters( 'schedule_event', $event ); // A plugin disallowed this event if ( ! $event ) { return false; } $key = md5( serialize( $event->args ) ); $crons = _get_cron_array(); $crons[ $event->timestamp ][ $event->hook ][ $key ] = array( 'schedule' => $event->schedule, 'args' => $event->args, 'interval' => $event->interval, ); uksort( $crons, 'strnatcasecmp' ); return _set_cron_array( $crons ); } /* * Reschedules a recurring event. * * Mainly for internal use, this takes the time stamp of a previously run * recurring event and reschedules it for its next run. * * To change upcoming scheduled events, use wp_schedule_event() to * change the recurrence frequency. * * @since 2.1.0 * @since 5.1.0 Return value modified to boolean indicating success or failure, * {@see 'pre_reschedule_event'} filter added to short-circuit the function. * * @param int $timestamp Unix timestamp (UTC) for when the event was scheduled. * @param string $recurrence How often the event should subsequently recur. See wp_get_schedules() for accepted values. * @param string $hook Action hook to execute when the event is run. * @param array $args Optional. Array containing each separate argument to pass to the hook's callback function. * @return bool True if event successfully rescheduled. False for failure. / function wp_reschedule_event( $timestamp, $recurrence, $hook, $args = array() ) { // Make sure timestamp is a positive integer if ( ! is_numeric( $timestamp ) \|\| $timestamp <= 0 ) { return false; } $schedules = wp_get_schedules(); $interval = 0; // First we try to get the interval 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 ) { $scheduled_event = wp_get_scheduled_event( $hook, $args, $timestamp ); if ( $scheduled_event && isset( $scheduled_event->interval ) ) { $interval = $scheduled_event->interval; } } $event = (object) array( 'hook' => $hook, 'timestamp' => $timestamp, 'schedule' => $recurrence, 'args' => $args, 'interval' => $interval, ); /* * Filter to preflight or hijack rescheduling of events. * * Returning a non-null value will short-circuit the normal rescheduling * process, causing the function to return the filtered value instead. * * For plugins replacing wp-cron, return true if the event was successfully * rescheduled, false if not. * * @since 5.1.0 * * @param null\|bool $pre Value to return instead. Default null to continue adding the event. * @param stdClass $event { * An object containing an event's data. * * @type string $hook Action hook to execute when the event is run. * @type int $timestamp Unix timestamp (UTC) for when to next run the event. * @type string\|false $schedule How often the event should subsequently recur. * @type array $args Array containing each separate argument to pass to the hook's callback function. * @type int $interval The interval time in seconds for the schedule. Only present for recurring events. * } / $pre = apply_filters( 'pre_reschedule_event', null, $event ); if ( null !== $pre ) { return $pre; } // 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 ) ); } return wp_schedule_event( $timestamp, $recurrence, $hook, $args ); } /* * Unschedule a previously scheduled event. * * The $timestamp and $hook parameters are required so that the event can be * identified. * * @since 2.1.0 * @since 5.1.0 Return value modified to boolean indicating success or failure, * {@see 'pre_unschedule_event'} filter added to short-circuit the function. * * @param int $timestamp Unix timestamp (UTC) of the event. * @param string $hook Action hook of the event. * @param array $args Optional. Array containing each separate argument to pass to the hook's callback function. * Although not passed to a callback, these arguments are used to uniquely identify the * event, so they should be the same as those used when originally scheduling the event. * @return bool True if event successfully unscheduled. False for failure. / function wp_unschedule_event( $timestamp, $hook, $args = array() ) { // Make sure timestamp is a positive integer if ( ! is_numeric( $timestamp ) \|\| $timestamp <= 0 ) { return false; } /* * Filter to preflight or hijack unscheduling of events. * * Returning a non-null value will short-circuit the normal unscheduling * process, causing the function to return the filtered value instead. * * For plugins replacing wp-cron, return true if the event was successfully * unscheduled, false if not. * * @since 5.1.0 * * @param null\|bool $pre Value to return instead. Default null to continue unscheduling the event. * @param int $timestamp Timestamp for when to run the event. * @param string $hook Action hook, the execution of which will be unscheduled. * @param array $args Arguments to pass to the hook's callback function. / $pre = apply_filters( 'pre_unschedule_event', null, $timestamp, $hook, $args ); if ( null !== $pre ) { return $pre; } $crons = _get_cron_array(); $key = md5( serialize( $args ) ); unset( $crons[ $timestamp ][ $hook ][ $key ] ); if ( empty( $crons[ $timestamp ][ $hook ] ) ) { unset( $crons[ $timestamp ][ $hook ] ); } if ( empty( $crons[ $timestamp ] ) ) { unset( $crons[ $timestamp ] ); } return _set_cron_array( $crons ); } /* * Unschedules all events attached to the hook with the specified arguments. * * Warning: This function may return Boolean FALSE, but may also return a non-Boolean * value which evaluates to FALSE. For information about casting to booleans see the * {@link https://php.net/manual/en/language.types.boolean.php PHP documentation}. Use * the `===` operator for testing the return value of this function. * * @since 2.1.0 * @since 5.1.0 Return value modified to indicate success or failure, * {@see 'pre_clear_scheduled_hook'} filter added to short-circuit the function. * * @param string $hook Action hook, the execution of which will be unscheduled. * @param array $args Optional. Arguments that were to be passed to the hook's callback function. * @return bool\|int On success an integer indicating number of events unscheduled (0 indicates no * events were registered with the hook and arguments combination), false if * unscheduling one or more events fail. / function wp_clear_scheduled_hook( $hook, $args = array() ) { // Backward compatibility // Previously this function took the arguments as discrete vars rather than an array like the rest of the API if ( ! is_array( $args ) ) { _deprecated_argument( __FUNCTION__, '3.0.0', __( 'This argument has changed to an array to match the behavior of the other cron functions.' ) ); $args = array_slice( func_get_args(), 1 ); } /* * Filter to preflight or hijack clearing a scheduled hook. * * Returning a non-null value will short-circuit the normal unscheduling * process, causing the function to return the filtered value instead. * * For plugins replacing wp-cron, return the number of events successfully * unscheduled (zero if no events were registered with the hook) or false * if unscheduling one or more events fails. * * @since 5.1.0 * * @param null\|array $pre Value to return instead. Default null to continue unscheduling the event. * @param string $hook Action hook, the execution of which will be unscheduled. * @param array $args Arguments to pass to the hook's callback function. / $pre = apply_filters( 'pre_clear_scheduled_hook', null, $hook, $args ); if ( null !== $pre ) { return $pre; } // This logic duplicates wp_next_scheduled() // It's required due to a scenario where wp_unschedule_event() fails due to update_option() failing, // and, wp_next_scheduled() returns the same schedule in an infinite loop. $crons = _get_cron_array(); if ( empty( $crons ) ) { return 0; } $results = array(); $key = md5( serialize( $args ) ); foreach ( $crons as $timestamp => $cron ) { if ( isset( $cron[ $hook ][ $key ] ) ) { $results[] = wp_unschedule_event( $timestamp, $hook, $args ); } } if ( in_array( false, $results, true ) ) { return false; } return count( $results ); } /* * Unschedules all events attached to the hook. * * Can be useful for plugins when deactivating to clean up the cron queue. * * Warning: This function may return Boolean FALSE, but may also return a non-Boolean * value which evaluates to FALSE. For information about casting to booleans see the * {@link https://php.net/manual/en/language.types.boolean.php PHP documentation}. Use * the `===` operator for testing the return value of this function. * * @since 4.9.0 * @since 5.1.0 Return value added to indicate success or failure. * * @param string $hook Action hook, the execution of which will be unscheduled. * @return bool\|int On success an integer indicating number of events unscheduled (0 indicates no * events were registered on the hook), false if unscheduling fails. / function wp_unschedule_hook( $hook ) { /* * Filter to preflight or hijack clearing all events attached to the hook. * * Returning a non-null value will short-circuit the normal unscheduling * process, causing the function to return the filtered value instead. * * For plugins replacing wp-cron, return the number of events successfully * unscheduled (zero if no events were registered with the hook) or false * if unscheduling one or more events fails. * * @since 5.1.0 * * @param null\|array $pre Value to return instead. Default null to continue unscheduling the hook. * @param string $hook Action hook, the execution of which will be unscheduled. / $pre = apply_filters( 'pre_unschedule_hook', null, $hook ); if ( null !== $pre ) { return $pre; } $crons = _get_cron_array(); if ( empty( $crons ) ) { return 0; } $results = array(); foreach ( $crons as $timestamp => $args ) { if ( ! empty( $crons[ $timestamp ][ $hook ] ) ) { $results[] = count( $crons[ $timestamp ][ $hook ] ); } unset( $crons[ $timestamp ][ $hook ] ); if ( empty( $crons[ $timestamp ] ) ) { unset( $crons[ $timestamp ] ); } } / * If the results are empty (zero events to unschedule), no attempt * to update the cron array is required. / if ( empty( $results ) ) { return 0; } if ( _set_cron_array( $crons ) ) { return array_sum( $results ); } return false; } /* * Retrieve a scheduled event. * * Retrieve the full event object for a given event, if no timestamp is specified the next * scheduled event is returned. * * @since 5.1.0 * * @param string $hook Action hook of the event. * @param array $args Optional. Array containing each separate argument to pass to the hook's callback function. * Although not passed to a callback, these arguments are used to uniquely identify the * event, so they should be the same as those used when originally scheduling the event. * @param int\|null $timestamp Optional. Unix timestamp (UTC) of the event. If not specified, the next scheduled event is returned. * @return bool\|object The event object. False if the event does not exist. / function wp_get_scheduled_event( $hook, $args = array(), $timestamp = null ) { /* * Filter to preflight or hijack retrieving a scheduled event. * * Returning a non-null value will short-circuit the normal process, * returning the filtered value instead. * * Return false if the event does not exist, otherwise an event object * should be returned. * * @since 5.1.0 * * @param null\|bool $pre Value to return instead. Default null to continue retrieving the event. * @param string $hook Action hook of the event. * @param array $args Array containing each separate argument to pass to the hook's callback function. * Although not passed to a callback, these arguments are used to uniquely identify the * event. * @param int\|null $timestamp Unix timestamp (UTC) of the event. Null to retrieve next scheduled event. / $pre = apply_filters( 'pre_get_scheduled_event', null, $hook, $args, $timestamp ); if ( null !== $pre ) { return $pre; } if ( null !== $timestamp && ! is_numeric( $timestamp ) ) { return false; } $crons = _get_cron_array(); if ( empty( $crons ) ) { return false; } $key = md5( serialize( $args ) ); if ( ! $timestamp ) { // Get next event. $next = false; foreach ( $crons as $timestamp => $cron ) { if ( isset( $cron[ $hook ][ $key ] ) ) { $next = $timestamp; break; } } if ( ! $next ) { return false; } $timestamp = $next; } elseif ( ! isset( $crons[ $timestamp ][ $hook ][ $key ] ) ) { return false; } $event = (object) array( 'hook' => $hook, 'timestamp' => $timestamp, 'schedule' => $crons[ $timestamp ][ $hook ][ $key ]['schedule'], 'args' => $args, ); if ( isset( $crons[ $timestamp ][ $hook ][ $key ]['interval'] ) ) { $event->interval = $crons[ $timestamp ][ $hook ][ $key ]['interval']; } return $event; } /* * Retrieve the next timestamp for an event. * * @since 2.1.0 * * @param string $hook Action hook of the event. * @param array $args Optional. Array containing each separate argument to pass to the hook's callback function. * Although not passed to a callback, these arguments are used to uniquely identify the * event, so they should be the same as those used when originally scheduling the event. * @return false\|int The Unix timestamp of the next time the event will occur. False if the event doesn't exist. / function wp_next_scheduled( $hook, $args = array() ) { $next_event = wp_get_scheduled_event( $hook, $args ); if ( ! $next_event ) { return false; } return $next_event->timestamp; } /* * Sends a request to run cron through HTTP request that doesn't halt page loading. * * @since 2.1.0 * @since 5.1.0 Return values added. * * @param int $gmt_time Optional. Unix timestamp (UTC). Default 0 (current time is used). * @return bool True if spawned, false if no events spawned. / function spawn_cron( $gmt_time = 0 ) { if ( ! $gmt_time ) { $gmt_time = microtime( true ); } if ( defined( 'DOING_CRON' ) \|\| isset( $_GET['doing_wp_cron'] ) ) { return false; } / * Get the cron lock, which is a Unix timestamp of when the last cron was spawned * and has not finished running. * * Multiple processes on multiple web servers can run this code concurrently, * this lock attempts to make spawning as atomic as possible. / $lock = get_transient( 'doing_cron' ); if ( $lock > $gmt_time + 10 MINUTE_IN_SECONDS ) { $lock = 0; } // don't run if another process is currently running it or more than once every 60 sec. if ( $lock + WP_CRON_LOCK_TIMEOUT > $gmt_time ) { return false; } //sanity check $crons = wp_get_ready_cron_jobs(); if ( empty( $crons ) ) { return false; } $keys = array_keys( $crons ); if ( isset( $keys[0] ) && $keys[0] > $gmt_time ) { return false; } if ( defined( 'ALTERNATE_WP_CRON' ) && ALTERNATE_WP_CRON ) { if ( 'GET' !== $_SERVER['REQUEST_METHOD'] \|\| defined( 'DOING_AJAX' ) \|\| defined( 'XMLRPC_REQUEST' ) ) { return false; } $doing_wp_cron = sprintf( '%.22F', $gmt_time ); set_transient( 'doing_cron', $doing_wp_cron ); ob_start(); wp_redirect( add_query_arg( 'doing_wp_cron', $doing_wp_cron, wp_unslash( $_SERVER['REQUEST_URI'] ) ) ); echo ' '; // flush any buffers and send the headers while ( @ob_end_flush() ) { } flush(); WP_DEBUG ? include_once( ABSPATH . 'cron.php' ) : @include_once( ABSPATH . 'cron.php' ); return true; } // Set the cron lock with the current unix timestamp, when the cron is being spawned. $doing_wp_cron = sprintf( '%.22F', $gmt_time ); set_transient( 'doing_cron', $doing_wp_cron ); /** * Filters the cron request arguments. * * @since 3.5.0 * @since 4.5.0 The `$doing_wp_cron` parameter was added. * * @param array $cron_request_array { * An array of cron request URL arguments. * * @type string $url The cron request URL. * @type int $key The 22 digit GMT microtime. * @type array $args { * An array of cron request arguments. * * @type int $timeout The request timeout in seconds. Default .01 seconds. * @type bool $blocking Whether to set blocking for the request. Default false. * @type bool $sslverify Whether SSL should be verified for the request. Default false. * } * } * @param string $doing_wp_cron The unix timestamp of the cron lock. / $cron_request = apply_filters( 'cron_request', array( 'url' => add_query_arg( 'doing_wp_cron', $doing_wp_cron, site_url( 'cron.php' ) ), 'key' => $doing_wp_cron, 'args' => array( 'timeout' => 0.01, 'blocking' => false, /* This filter is documented in site-inc/class-wp-http-streams.php / 'sslverify' => apply_filters( 'https_local_ssl_verify', false ), ), ), $doing_wp_cron ); $result = wp_remote_post( $cron_request['url'], $cron_request['args'] ); return ! is_wp_error( $result ); } /* * Run scheduled callbacks or spawn cron for all scheduled events. * * Warning: This function may return Boolean FALSE, but may also return a non-Boolean * value which evaluates to FALSE. For information about casting to booleans see the * {@link https://php.net/manual/en/language.types.boolean.php PHP documentation}. Use * the `===` operator for testing the return value of this function. * * @since 2.1.0 * @since 5.1.0 Return value added to indicate success or failure. * * @return bool\|int On success an integer indicating number of events spawned (0 indicates no * events needed to be spawned), false if spawning fails for one or more events. / function wp_cron() { // Prevent infinite loops caused by lack of wp-cron.php if ( strpos( $_SERVER['REQUEST_URI'], '/cron.php' ) !== false \|\| ( defined( 'DISABLE_WP_CRON' ) && DISABLE_WP_CRON ) ) { return 0; } $crons = wp_get_ready_cron_jobs(); if ( empty( $crons ) ) { return 0; } $gmt_time = microtime( true ); $keys = array_keys( $crons ); if ( isset( $keys[0] ) && $keys[0] > $gmt_time ) { return 0; } $schedules = wp_get_schedules(); $results = array(); foreach ( $crons as $timestamp => $cronhooks ) { if ( $timestamp > $gmt_time ) { break; } foreach ( (array) $cronhooks as $hook => $args ) { if ( isset( $schedules[ $hook ]['callback'] ) && ! call_user_func( $schedules[ $hook ]['callback'] ) ) { continue; } $results[] = spawn_cron( $gmt_time ); break 2; } } if ( in_array( false, $results, true ) ) { return false; } return count( $results ); } /* * Retrieve supported event recurrence schedules. * * The default supported recurrences are 'hourly', 'twicedaily', and 'daily'. A plugin may * add more by hooking into the {@see 'cron_schedules'} filter. The filter accepts an array * of arrays. The outer array has a key that is the name of the schedule or for * example 'weekly'. The value is an array with two keys, one is 'interval' and * the other is 'display'. * * The 'interval' is a number in seconds of when the cron job should run. So for * 'hourly', the time is 3600 or 6060. For weekly, the value would be 6060247 or 604800. The value of 'interval' would then be 604800. * The 'display' is the description. For the 'weekly' key, the 'display' would * be `__( 'Once Weekly' )`. * * For your plugin, you will be passed an array. you can easily add your * schedule by doing the following. * * // Filter parameter variable name is 'array'. * $array['weekly'] = array( * 'interval' => 604800, * 'display' => __( 'Once Weekly' ) * ); * * @since 2.1.0 * * @return array / function wp_get_schedules() { $schedules = array( 'hourly' => array( '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 * @since 5.1.0 {@see 'get_schedule'} filter added. * * @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() ) { $schedule = false; $event = wp_get_scheduled_event( $hook, $args ); if ( $event ) { $schedule = $event->schedule; } /* * Filter the schedule for a hook. * * @since 5.1.0 * * @param string\|bool $schedule Schedule for the hook. False if not found. * @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 apply_filters( 'get_schedule', $schedule, $hook, $args ); } /* * Retrieve cron jobs ready to be run. * * Returns the results of _get_cron_array() limited to events ready to be run, * ie, with a timestamp in the past. * * @since 5.1.0 * * @return array Cron jobs ready to be run. / function wp_get_ready_cron_jobs() { /* * Filter to preflight or hijack retrieving ready cron jobs. * * Returning an array will short-circuit the normal retrieval of ready * cron jobs, causing the function to return the filtered value instead. * * @since 5.1.0 * * @param null\|array $pre Array of ready cron tasks to return instead. Default null * to continue using results from _get_cron_array(). / $pre = apply_filters( 'pre_get_ready_cron_jobs', null ); if ( null !== $pre ) { return $pre; } $crons = _get_cron_array(); if ( false === $crons ) { return array(); } $gmt_time = microtime( true ); $keys = array_keys( $crons ); if ( isset( $keys[0] ) && $keys[0] > $gmt_time ) { return array(); } $results = array(); foreach ( $crons as $timestamp => $cronhooks ) { if ( $timestamp > $gmt_time ) { break; } $results[ $timestamp ] = $cronhooks; } return $results; } // // 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 * @since 5.1.0 Return value modified to outcome of update_option(). * * @access private * * @param array $cron Cron info array from _get_cron_array(). * @return bool True if cron array updated, false on failure. / function _set_cron_array( $cron ) { $cron['version'] = 2; return 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; } Back

Edit File : cron.php | Size : 30.82 KB

<?php
/**
 * WordPress Cron API
 *
 * @package WordPress
 */

/**
 * Schedules an event to run only once.
 *
 * Schedules a hook which will be triggered by WordPress at the specified time.
 * The action will trigger when someone visits your WordPress site if the scheduled
 * time has passed.
 *
 * Note that scheduling an event to occur within 10 minutes of an existing event
 * with the same action hook will be ignored unless you pass unique `$args` values
 * for each scheduled event.
 *
 * Use wp_next_scheduled() to prevent duplicate events.
 *
 * Use wp_schedule_event() to schedule a recurring event.
 *
 * @since 2.1.0
 * @since 5.1.0 Return value modified to boolean indicating success or failure,
 *              {@see 'pre_schedule_event'} filter added to short-circuit the function.
 *
 * @link https://sitepad.com/docs/Function_Reference/wp_schedule_single_event
 *
 * @param int    $timestamp  Unix timestamp (UTC) for when to next run the event.
 * @param string $hook       Action hook to execute when the event is run.
 * @param array  $args       Optional. Array containing each separate argument to pass to the hook's callback function.
 * @return bool True if event successfully scheduled. False for failure.
 */
function wp_schedule_single_event( $timestamp, $hook, $args = array() ) {
	// Make sure timestamp is a positive integer
	if ( ! is_numeric( $timestamp ) || $timestamp <= 0 ) {
		return false;
	}

$event = (object) array(
		'hook'      => $hook,
		'timestamp' => $timestamp,
		'schedule'  => false,
		'args'      => $args,
	);

/**
	 * Filter to preflight or hijack scheduling an event.
	 *
	 * Returning a non-null value will short-circuit adding the event to the
	 * cron array, causing the function to return the filtered value instead.
	 *
	 * Both single events and recurring events are passed through this filter;
	 * single events have `$event->schedule` as false, whereas recurring events
	 * have this set to a recurrence from wp_get_schedules(). Recurring
	 * events also have the integer recurrence interval set as `$event->interval`.
	 *
	 * For plugins replacing wp-cron, it is recommended you check for an
	 * identical event within ten minutes and apply the {@see 'schedule_event'}
	 * filter to check if another plugin has disallowed the event before scheduling.
	 *
	 * Return true if the event was scheduled, false if not.
	 *
	 * @since 5.1.0
	 *
	 * @param null|bool $pre   Value to return instead. Default null to continue adding the event.
	 * @param stdClass  $event {
	 *     An object containing an event's data.
	 *
	 *     @type string       $hook      Action hook to execute when the event is run.
	 *     @type int          $timestamp Unix timestamp (UTC) for when to next run the event.
	 *     @type string|false $schedule  How often the event should subsequently recur.
	 *     @type array        $args      Array containing each separate argument to pass to the hook's callback function.
	 *     @type int          $interval  The interval time in seconds for the schedule. Only present for recurring events.
	 * }
	 */
	$pre = apply_filters( 'pre_schedule_event', null, $event );
	if ( null !== $pre ) {
		return $pre;
	}

// Don't schedule a duplicate if there's already an identical event due within 10 minutes of it
	$next = wp_next_scheduled( $hook, $args );
	if ( $next && abs( $next - $timestamp ) <= 10 * MINUTE_IN_SECONDS ) {
		return false;
	}

/**
	 * Modify an event before it is scheduled.
	 *
	 * @since 3.1.0
	 *
	 * @param stdClass $event {
	 *     An object containing an event's data.
	 *
	 *     @type string       $hook      Action hook to execute when the event is run.
	 *     @type int          $timestamp Unix timestamp (UTC) for when to next run the event.
	 *     @type string|false $schedule  How often the event should subsequently recur.
	 *     @type array        $args      Array containing each separate argument to pass to the hook's callback function.
	 *     @type int          $interval  The interval time in seconds for the schedule. Only present for recurring events.
	 * }
	 */
	$event = apply_filters( 'schedule_event', $event );

// A plugin disallowed this event
	if ( ! $event ) {
		return false;
	}

$key = md5( serialize( $event->args ) );

$crons = _get_cron_array();
	$crons[ $event->timestamp ][ $event->hook ][ $key ] = array(
		'schedule' => $event->schedule,
		'args'     => $event->args,
	);
	uksort( $crons, 'strnatcasecmp' );
	return _set_cron_array( $crons );
}

/**
 * Schedules a recurring event.
 *
 * Schedules a hook which will be triggered by WordPress at the specified interval.
 * The action will trigger when someone visits your WordPress site if the scheduled
 * time has passed.
 *
 * Valid values for the recurrence are 'hourly', 'daily', and 'twicedaily'. These can
 * be extended using the {@see 'cron_schedules'} filter in wp_get_schedules().
 *
 * Note that scheduling an event to occur within 10 minutes of an existing event
 * with the same action hook will be ignored unless you pass unique `$args` values
 * for each scheduled event.
 *
 * Use wp_next_scheduled() to prevent duplicate events.
 *
 * Use wp_schedule_single_event() to schedule a non-recurring event.
 *
 * @since 2.1.0
 * @since 5.1.0 Return value modified to boolean indicating success or failure,
 *              {@see 'pre_schedule_event'} filter added to short-circuit the function.
 *
 * @link https://sitepad.com/docs/Function_Reference/wp_schedule_event
 *
 * @param int    $timestamp  Unix timestamp (UTC) for when to next run the event.
 * @param string $recurrence How often the event should subsequently recur. See wp_get_schedules() for accepted values.
 * @param string $hook       Action hook to execute when the event is run.
 * @param array  $args       Optional. Array containing each separate argument to pass to the hook's callback function.
 * @return bool True if event successfully scheduled. False for failure.
 */
function wp_schedule_event( $timestamp, $recurrence, $hook, $args = array() ) {
	// Make sure timestamp is a positive integer
	if ( ! is_numeric( $timestamp ) || $timestamp <= 0 ) {
		return false;
	}

$schedules = wp_get_schedules();

if ( ! isset( $schedules[ $recurrence ] ) ) {
		return false;
	}

$event = (object) array(
		'hook'      => $hook,
		'timestamp' => $timestamp,
		'schedule'  => $recurrence,
		'args'      => $args,
		'interval'  => $schedules[ $recurrence ]['interval'],
	);

/** This filter is documented in site-inc/cron.php */
	$pre = apply_filters( 'pre_schedule_event', null, $event );
	if ( null !== $pre ) {
		return $pre;
	}

/** This filter is documented in site-inc/cron.php */
	$event = apply_filters( 'schedule_event', $event );

// A plugin disallowed this event
	if ( ! $event ) {
		return false;
	}

$key = md5( serialize( $event->args ) );

$crons = _get_cron_array();
	$crons[ $event->timestamp ][ $event->hook ][ $key ] = array(
		'schedule' => $event->schedule,
		'args'     => $event->args,
		'interval' => $event->interval,
	);
	uksort( $crons, 'strnatcasecmp' );
	return _set_cron_array( $crons );
}

/**
 * Reschedules a recurring event.
 *
 * Mainly for internal use, this takes the time stamp of a previously run
 * recurring event and reschedules it for its next run.
 *
 * To change upcoming scheduled events, use wp_schedule_event() to
 * change the recurrence frequency.
 *
 * @since 2.1.0
 * @since 5.1.0 Return value modified to boolean indicating success or failure,
 *              {@see 'pre_reschedule_event'} filter added to short-circuit the function.
 *
 * @param int    $timestamp  Unix timestamp (UTC) for when the event was scheduled.
 * @param string $recurrence How often the event should subsequently recur. See wp_get_schedules() for accepted values.
 * @param string $hook       Action hook to execute when the event is run.
 * @param array  $args       Optional. Array containing each separate argument to pass to the hook's callback function.
 * @return bool True if event successfully rescheduled. False for failure.
 */
function wp_reschedule_event( $timestamp, $recurrence, $hook, $args = array() ) {
	// Make sure timestamp is a positive integer
	if ( ! is_numeric( $timestamp ) || $timestamp <= 0 ) {
		return false;
	}

$schedules = wp_get_schedules();
	$interval  = 0;

// First we try to get the interval 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 ) {
		$scheduled_event = wp_get_scheduled_event( $hook, $args, $timestamp );
		if ( $scheduled_event && isset( $scheduled_event->interval ) ) {
			$interval = $scheduled_event->interval;
		}
	}

$event = (object) array(
		'hook'      => $hook,
		'timestamp' => $timestamp,
		'schedule'  => $recurrence,
		'args'      => $args,
		'interval'  => $interval,
	);

/**
	 * Filter to preflight or hijack rescheduling of events.
	 *
	 * Returning a non-null value will short-circuit the normal rescheduling
	 * process, causing the function to return the filtered value instead.
	 *
	 * For plugins replacing wp-cron, return true if the event was successfully
	 * rescheduled, false if not.
	 *
	 * @since 5.1.0
	 *
	 * @param null|bool $pre   Value to return instead. Default null to continue adding the event.
	 * @param stdClass  $event {
	 *     An object containing an event's data.
	 *
	 *     @type string       $hook      Action hook to execute when the event is run.
	 *     @type int          $timestamp Unix timestamp (UTC) for when to next run the event.
	 *     @type string|false $schedule  How often the event should subsequently recur.
	 *     @type array        $args      Array containing each separate argument to pass to the hook's callback function.
	 *     @type int          $interval  The interval time in seconds for the schedule. Only present for recurring events.
	 * }
	 */
	$pre = apply_filters( 'pre_reschedule_event', null, $event );
	if ( null !== $pre ) {
		return $pre;
	}

// 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 ) );
	}

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

/**
 * Unschedule a previously scheduled event.
 *
 * The $timestamp and $hook parameters are required so that the event can be
 * identified.
 *
 * @since 2.1.0
 * @since 5.1.0 Return value modified to boolean indicating success or failure,
 *              {@see 'pre_unschedule_event'} filter added to short-circuit the function.
 *
 * @param int    $timestamp Unix timestamp (UTC) of the event.
 * @param string $hook      Action hook of the event.
 * @param array  $args      Optional. Array containing each separate argument to pass to the hook's callback function.
 *                          Although not passed to a callback, these arguments are used to uniquely identify the
 *                          event, so they should be the same as those used when originally scheduling the event.
 * @return bool True if event successfully unscheduled. False for failure.
 */
function wp_unschedule_event( $timestamp, $hook, $args = array() ) {
	// Make sure timestamp is a positive integer
	if ( ! is_numeric( $timestamp ) || $timestamp <= 0 ) {
		return false;
	}

/**
	 * Filter to preflight or hijack unscheduling of events.
	 *
	 * Returning a non-null value will short-circuit the normal unscheduling
	 * process, causing the function to return the filtered value instead.
	 *
	 * For plugins replacing wp-cron, return true if the event was successfully
	 * unscheduled, false if not.
	 *
	 * @since 5.1.0
	 *
	 * @param null|bool $pre       Value to return instead. Default null to continue unscheduling the event.
	 * @param int       $timestamp Timestamp for when to run the event.
	 * @param string    $hook      Action hook, the execution of which will be unscheduled.
	 * @param array     $args      Arguments to pass to the hook's callback function.
	 */
	$pre = apply_filters( 'pre_unschedule_event', null, $timestamp, $hook, $args );
	if ( null !== $pre ) {
		return $pre;
	}

$crons = _get_cron_array();
	$key   = md5( serialize( $args ) );
	unset( $crons[ $timestamp ][ $hook ][ $key ] );
	if ( empty( $crons[ $timestamp ][ $hook ] ) ) {
		unset( $crons[ $timestamp ][ $hook ] );
	}
	if ( empty( $crons[ $timestamp ] ) ) {
		unset( $crons[ $timestamp ] );
	}
	return _set_cron_array( $crons );
}

/**
 * Unschedules all events attached to the hook with the specified arguments.
 *
 * Warning: This function may return Boolean FALSE, but may also return a non-Boolean
 * value which evaluates to FALSE. For information about casting to booleans see the
 * {@link https://php.net/manual/en/language.types.boolean.php PHP documentation}. Use
 * the `===` operator for testing the return value of this function.
 *
 * @since 2.1.0
 * @since 5.1.0 Return value modified to indicate success or failure,
 *              {@see 'pre_clear_scheduled_hook'} filter added to short-circuit the function.
 *
 * @param string $hook Action hook, the execution of which will be unscheduled.
 * @param array $args Optional. Arguments that were to be passed to the hook's callback function.
 * @return bool|int On success an integer indicating number of events unscheduled (0 indicates no
 *                  events were registered with the hook and arguments combination), false if
 *                  unscheduling one or more events fail.
 */
function wp_clear_scheduled_hook( $hook, $args = array() ) {
	// Backward compatibility
	// Previously this function took the arguments as discrete vars rather than an array like the rest of the API
	if ( ! is_array( $args ) ) {
		_deprecated_argument( __FUNCTION__, '3.0.0', __( 'This argument has changed to an array to match the behavior of the other cron functions.' ) );
		$args = array_slice( func_get_args(), 1 );
	}

/**
	 * Filter to preflight or hijack clearing a scheduled hook.
	 *
	 * Returning a non-null value will short-circuit the normal unscheduling
	 * process, causing the function to return the filtered value instead.
	 *
	 * For plugins replacing wp-cron, return the number of events successfully
	 * unscheduled (zero if no events were registered with the hook) or false
	 * if unscheduling one or more events fails.
	 *
	 * @since 5.1.0
	 *
	 * @param null|array $pre  Value to return instead. Default null to continue unscheduling the event.
	 * @param string     $hook Action hook, the execution of which will be unscheduled.
	 * @param array      $args Arguments to pass to the hook's callback function.
	 */
	$pre = apply_filters( 'pre_clear_scheduled_hook', null, $hook, $args );
	if ( null !== $pre ) {
		return $pre;
	}

// This logic duplicates wp_next_scheduled()
	// It's required due to a scenario where wp_unschedule_event() fails due to update_option() failing,
	// and, wp_next_scheduled() returns the same schedule in an infinite loop.
	$crons = _get_cron_array();
	if ( empty( $crons ) ) {
		return 0;
	}

$results = array();
	$key     = md5( serialize( $args ) );
	foreach ( $crons as $timestamp => $cron ) {
		if ( isset( $cron[ $hook ][ $key ] ) ) {
			$results[] = wp_unschedule_event( $timestamp, $hook, $args );
		}
	}
	if ( in_array( false, $results, true ) ) {
		return false;
	}
	return count( $results );
}

/**
 * Unschedules all events attached to the hook.
 *
 * Can be useful for plugins when deactivating to clean up the cron queue.
 *
 * Warning: This function may return Boolean FALSE, but may also return a non-Boolean
 * value which evaluates to FALSE. For information about casting to booleans see the
 * {@link https://php.net/manual/en/language.types.boolean.php PHP documentation}. Use
 * the `===` operator for testing the return value of this function.
 *
 * @since 4.9.0
 * @since 5.1.0 Return value added to indicate success or failure.
 *
 * @param string $hook Action hook, the execution of which will be unscheduled.
 * @return bool|int On success an integer indicating number of events unscheduled (0 indicates no
 *                  events were registered on the hook), false if unscheduling fails.
 */
function wp_unschedule_hook( $hook ) {
	/**
	 * Filter to preflight or hijack clearing all events attached to the hook.
	 *
	 * Returning a non-null value will short-circuit the normal unscheduling
	 * process, causing the function to return the filtered value instead.
	 *
	 * For plugins replacing wp-cron, return the number of events successfully
	 * unscheduled (zero if no events were registered with the hook) or false
	 * if unscheduling one or more events fails.
	 *
	 * @since 5.1.0
	 *
	 * @param null|array $pre  Value to return instead. Default null to continue unscheduling the hook.
	 * @param string     $hook Action hook, the execution of which will be unscheduled.
	 */
	$pre = apply_filters( 'pre_unschedule_hook', null, $hook );
	if ( null !== $pre ) {
		return $pre;
	}

$crons = _get_cron_array();
	if ( empty( $crons ) ) {
		return 0;
	}

$results = array();
	foreach ( $crons as $timestamp => $args ) {
		if ( ! empty( $crons[ $timestamp ][ $hook ] ) ) {
			$results[] = count( $crons[ $timestamp ][ $hook ] );
		}
		unset( $crons[ $timestamp ][ $hook ] );

if ( empty( $crons[ $timestamp ] ) ) {
			unset( $crons[ $timestamp ] );
		}
	}

/*
	 * If the results are empty (zero events to unschedule), no attempt
	 * to update the cron array is required.
	 */
	if ( empty( $results ) ) {
		return 0;
	}
	if ( _set_cron_array( $crons ) ) {
		return array_sum( $results );
	}
	return false;
}

/**
 * Retrieve a scheduled event.
 *
 * Retrieve the full event object for a given event, if no timestamp is specified the next
 * scheduled event is returned.
 *
 * @since 5.1.0
 *
 * @param string   $hook      Action hook of the event.
 * @param array    $args      Optional. Array containing each separate argument to pass to the hook's callback function.
 *                            Although not passed to a callback, these arguments are used to uniquely identify the
 *                            event, so they should be the same as those used when originally scheduling the event.
 * @param int|null $timestamp Optional. Unix timestamp (UTC) of the event. If not specified, the next scheduled event is returned.
 * @return bool|object The event object. False if the event does not exist.
 */
function wp_get_scheduled_event( $hook, $args = array(), $timestamp = null ) {
	/**
	 * Filter to preflight or hijack retrieving a scheduled event.
	 *
	 * Returning a non-null value will short-circuit the normal process,
	 * returning the filtered value instead.
	 *
	 * Return false if the event does not exist, otherwise an event object
	 * should be returned.
	 *
	 * @since 5.1.0
	 *
	 * @param null|bool $pre       Value to return instead. Default null to continue retrieving the event.
	 * @param string    $hook      Action hook of the event.
	 * @param array     $args      Array containing each separate argument to pass to the hook's callback function.
	 *                             Although not passed to a callback, these arguments are used to uniquely identify the
	 *                             event.
	 * @param int|null  $timestamp Unix timestamp (UTC) of the event. Null to retrieve next scheduled event.
	 */
	$pre = apply_filters( 'pre_get_scheduled_event', null, $hook, $args, $timestamp );
	if ( null !== $pre ) {
		return $pre;
	}

if ( null !== $timestamp && ! is_numeric( $timestamp ) ) {
		return false;
	}

$crons = _get_cron_array();
	if ( empty( $crons ) ) {
		return false;
	}

$key = md5( serialize( $args ) );

if ( ! $timestamp ) {
		// Get next event.
		$next = false;
		foreach ( $crons as $timestamp => $cron ) {
			if ( isset( $cron[ $hook ][ $key ] ) ) {
				$next = $timestamp;
				break;
			}
		}
		if ( ! $next ) {
			return false;
		}

$timestamp = $next;
	} elseif ( ! isset( $crons[ $timestamp ][ $hook ][ $key ] ) ) {
		return false;
	}

$event = (object) array(
		'hook'      => $hook,
		'timestamp' => $timestamp,
		'schedule'  => $crons[ $timestamp ][ $hook ][ $key ]['schedule'],
		'args'      => $args,
	);

if ( isset( $crons[ $timestamp ][ $hook ][ $key ]['interval'] ) ) {
		$event->interval = $crons[ $timestamp ][ $hook ][ $key ]['interval'];
	}

return $event;
}

/**
 * Retrieve the next timestamp for an event.
 *
 * @since 2.1.0
 *
 * @param string $hook Action hook of the event.
 * @param array  $args Optional. Array containing each separate argument to pass to the hook's callback function.
 *                     Although not passed to a callback, these arguments are used to uniquely identify the
 *                     event, so they should be the same as those used when originally scheduling the event.
 * @return false|int The Unix timestamp of the next time the event will occur. False if the event doesn't exist.
 */
function wp_next_scheduled( $hook, $args = array() ) {
	$next_event = wp_get_scheduled_event( $hook, $args );
	if ( ! $next_event ) {
		return false;
	}

return $next_event->timestamp;
}

/**
 * Sends a request to run cron through HTTP request that doesn't halt page loading.
 *
 * @since 2.1.0
 * @since 5.1.0 Return values added.
 *
 * @param int $gmt_time Optional. Unix timestamp (UTC). Default 0 (current time is used).
 * @return bool True if spawned, false if no events spawned.
 */
function spawn_cron( $gmt_time = 0 ) {
	if ( ! $gmt_time ) {
		$gmt_time = microtime( true );
	}

if ( defined( 'DOING_CRON' ) || isset( $_GET['doing_wp_cron'] ) ) {
		return false;
	}

/*
	 * Get the cron lock, which is a Unix timestamp of when the last cron was spawned
	 * and has not finished running.
	 *
	 * Multiple processes on multiple web servers can run this code concurrently,
	 * this lock attempts to make spawning as atomic as possible.
	 */
	$lock = get_transient( 'doing_cron' );

if ( $lock > $gmt_time + 10 * MINUTE_IN_SECONDS ) {
		$lock = 0;
	}

// don't run if another process is currently running it or more than once every 60 sec.
	if ( $lock + WP_CRON_LOCK_TIMEOUT > $gmt_time ) {
		return false;
	}

//sanity check
	$crons = wp_get_ready_cron_jobs();
	if ( empty( $crons ) ) {
		return false;
	}

$keys = array_keys( $crons );
	if ( isset( $keys[0] ) && $keys[0] > $gmt_time ) {
		return false;
	}

if ( defined( 'ALTERNATE_WP_CRON' ) && ALTERNATE_WP_CRON ) {
		if ( 'GET' !== $_SERVER['REQUEST_METHOD'] || defined( 'DOING_AJAX' ) || defined( 'XMLRPC_REQUEST' ) ) {
			return false;
		}

$doing_wp_cron = sprintf( '%.22F', $gmt_time );
		set_transient( 'doing_cron', $doing_wp_cron );

ob_start();
		wp_redirect( add_query_arg( 'doing_wp_cron', $doing_wp_cron, wp_unslash( $_SERVER['REQUEST_URI'] ) ) );
		echo ' ';

// flush any buffers and send the headers
		while ( @ob_end_flush() ) {
		}
		flush();

WP_DEBUG ? include_once( ABSPATH . 'cron.php' ) : @include_once( ABSPATH . 'cron.php' );
		return true;
	}

// Set the cron lock with the current unix timestamp, when the cron is being spawned.
	$doing_wp_cron = sprintf( '%.22F', $gmt_time );
	set_transient( 'doing_cron', $doing_wp_cron );

/**
	 * Filters the cron request arguments.
	 *
	 * @since 3.5.0
	 * @since 4.5.0 The `$doing_wp_cron` parameter was added.
	 *
	 * @param array $cron_request_array {
	 *     An array of cron request URL arguments.
	 *
	 *     @type string $url  The cron request URL.
	 *     @type int    $key  The 22 digit GMT microtime.
	 *     @type array  $args {
	 *         An array of cron request arguments.
	 *
	 *         @type int  $timeout   The request timeout in seconds. Default .01 seconds.
	 *         @type bool $blocking  Whether to set blocking for the request. Default false.
	 *         @type bool $sslverify Whether SSL should be verified for the request. Default false.
	 *     }
	 * }
	 * @param string $doing_wp_cron The unix timestamp of the cron lock.
	 */
	$cron_request = apply_filters(
		'cron_request',
		array(
			'url'  => add_query_arg( 'doing_wp_cron', $doing_wp_cron, site_url( 'cron.php' ) ),
			'key'  => $doing_wp_cron,
			'args' => array(
				'timeout'   => 0.01,
				'blocking'  => false,
				/** This filter is documented in site-inc/class-wp-http-streams.php */
				'sslverify' => apply_filters( 'https_local_ssl_verify', false ),
			),
		),
		$doing_wp_cron
	);

$result = wp_remote_post( $cron_request['url'], $cron_request['args'] );
	return ! is_wp_error( $result );
}

/**
 * Run scheduled callbacks or spawn cron for all scheduled events.
 *
 * Warning: This function may return Boolean FALSE, but may also return a non-Boolean
 * value which evaluates to FALSE. For information about casting to booleans see the
 * {@link https://php.net/manual/en/language.types.boolean.php PHP documentation}. Use
 * the `===` operator for testing the return value of this function.
 *
 * @since 2.1.0
 * @since 5.1.0 Return value added to indicate success or failure.
 *
 * @return bool|int On success an integer indicating number of events spawned (0 indicates no
 *                  events needed to be spawned), false if spawning fails for one or more events.
 */
function wp_cron() {
	// Prevent infinite loops caused by lack of wp-cron.php
	if ( strpos( $_SERVER['REQUEST_URI'], '/cron.php' ) !== false || ( defined( 'DISABLE_WP_CRON' ) && DISABLE_WP_CRON ) ) {
		return 0;
	}

$crons = wp_get_ready_cron_jobs();
	if ( empty( $crons ) ) {
		return 0;
	}

$gmt_time = microtime( true );
	$keys     = array_keys( $crons );
	if ( isset( $keys[0] ) && $keys[0] > $gmt_time ) {
		return 0;
	}

$schedules = wp_get_schedules();
	$results   = array();
	foreach ( $crons as $timestamp => $cronhooks ) {
		if ( $timestamp > $gmt_time ) {
			break;
		}
		foreach ( (array) $cronhooks as $hook => $args ) {
			if ( isset( $schedules[ $hook ]['callback'] ) && ! call_user_func( $schedules[ $hook ]['callback'] ) ) {
				continue;
			}
			$results[] = spawn_cron( $gmt_time );
			break 2;
		}
	}

if ( in_array( false, $results, true ) ) {
		return false;
	}
	return count( $results );
}

/**
 * Retrieve supported event recurrence schedules.
 *
 * The default supported recurrences are 'hourly', 'twicedaily', and 'daily'. A plugin may
 * add more by hooking into the {@see 'cron_schedules'} filter. The filter accepts an array
 * of arrays. The outer array has a key that is the name of the schedule or for
 * example 'weekly'. The value is an array with two keys, one is 'interval' and
 * the other is 'display'.
 *
 * The 'interval' is a number in seconds of when the cron job should run. So for
 * 'hourly', the time is 3600 or 60*60. For weekly, the value would be
 * 60*60*24*7 or 604800. The value of 'interval' would then be 604800.
 *
 * The 'display' is the description. For the 'weekly' key, the 'display' would
 * be `__( 'Once Weekly' )`.
 *
 * For your plugin, you will be passed an array. you can easily add your
 * schedule by doing the following.
 *
 *     // Filter parameter variable name is 'array'.
 *     $array['weekly'] = array(
 *         'interval' => 604800,
 *         'display'  => __( 'Once Weekly' )
 *     );
 *
 * @since 2.1.0
 *
 * @return array
 */
function wp_get_schedules() {
	$schedules = array(
		'hourly'     => array(
			'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
 * @since 5.1.0 {@see 'get_schedule'} filter added.
 *
 * @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() ) {
	$schedule = false;
	$event    = wp_get_scheduled_event( $hook, $args );

if ( $event ) {
		$schedule = $event->schedule;
	}

/**
	 * Filter the schedule for a hook.
	 *
	 * @since 5.1.0
	 *
	 * @param string|bool $schedule Schedule for the hook. False if not found.
	 * @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 apply_filters( 'get_schedule', $schedule, $hook, $args );
}

/**
 * Retrieve cron jobs ready to be run.
 *
 * Returns the results of _get_cron_array() limited to events ready to be run,
 * ie, with a timestamp in the past.
 *
 * @since 5.1.0
 *
 * @return array Cron jobs ready to be run.
 */
function wp_get_ready_cron_jobs() {
	/**
	 * Filter to preflight or hijack retrieving ready cron jobs.
	 *
	 * Returning an array will short-circuit the normal retrieval of ready
	 * cron jobs, causing the function to return the filtered value instead.
	 *
	 * @since 5.1.0
	 *
	 * @param null|array $pre Array of ready cron tasks to return instead. Default null
	 *                        to continue using results from _get_cron_array().
	 */
	$pre = apply_filters( 'pre_get_ready_cron_jobs', null );
	if ( null !== $pre ) {
		return $pre;
	}

$crons = _get_cron_array();

if ( false === $crons ) {
		return array();
	}

$gmt_time = microtime( true );
	$keys     = array_keys( $crons );
	if ( isset( $keys[0] ) && $keys[0] > $gmt_time ) {
		return array();
	}

$results = array();
	foreach ( $crons as $timestamp => $cronhooks ) {
		if ( $timestamp > $gmt_time ) {
			break;
		}
		$results[ $timestamp ] = $cronhooks;
	}

return $results;
}

//
// 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
 * @since 5.1.0 Return value modified to outcome of update_option().
 *
 * @access private
 *
 * @param array $cron Cron info array from _get_cron_array().
 * @return bool True if cron array updated, false on failure.
 */
function _set_cron_array( $cron ) {
	$cron['version'] = 2;
	return 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;
}

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