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 PHP documentation. Use the === operator for testing the return value of this function.
(string) (Required) Action hook, the execution of which will be unscheduled.
(int|false) On success an integer indicating number of events unscheduled (0 indicates no events were registered on the hook), false if unscheduling fails.
File: wp-includes/cron.php
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|int|false $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;
} | Version | Description |
|---|---|
| 5.1.0 | Return value added to indicate success or failure. |
| 4.9.0 | Introduced. |
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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/wp_unschedule_hook