Summery Summery
Run scheduled callbacks or spawn cron for all scheduled events.
Syntax Syntax
Description Description
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 PHP documentation. Use the ===
operator for testing the return value of this function.
Return 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.
Source Source
File: wp-includes/cron.php
function wp_cron() { // Prevent infinite loops caused by lack of wp-cron.php. if ( strpos( $_SERVER['REQUEST_URI'], '/wp-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 ); }
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Changelog Changelog
Version | Description |
---|---|
5.1.0 | Return value added to indicate success or failure. |
2.1.0 | Introduced. |