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pre_unschedule_hook ›

apply_filters( 'pre_unschedule_hook', null, $hook )
Parameters: (2)
  • (null|int|false) $pre Value to return instead. Default null to continue unscheduling the hook.
    Required: Yes
  • (string) $hook Action hook, the execution of which will be unscheduled.
    Required: Yes
Defined at:

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.


$pre = apply_filters( 'pre_unschedule_hook', null, $hook );