wp_get_schedule( string $hook, array $args = array() ): string|false

Retrieves the name of the recurrence schedule for an event.

Contents

Description
- See also
Parameters
Return
Source
Hooks
Related
- Uses
Changelog
User Contributed Notes

Description

See also

wp_get_schedules() : for available schedules.

Parameters

$hook string Required: Action hook to identify the event.
$args array Optional: Arguments passed to the event's callback function.

Default: array()

Return

string|false Schedule name on success, false if no schedule.

Source

File: wp-includes/cron.php. View all references

function wp_get_schedule( $hook, $args = array() ) {
	$schedule = false;
	$event    = wp_get_scheduled_event( $hook, $args );

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

	/**
	 * Filters the schedule name for a hook.
	 *
	 * @since 5.1.0
	 *
	 * @param string|false $schedule Schedule for the hook. False if not found.
	 * @param string       $hook     Action hook to execute when cron is run.
	 * @param array        $args     Arguments to pass to the hook's callback function.
	 */
	return apply_filters( 'get_schedule', $schedule, $hook, $args );
}

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Hooks

apply_filters( 'get_schedule', string|false $schedule, string $hook, array $args )

Filters the schedule name for a hook.

Uses

Uses
Uses	Description
wp_get_scheduled_event() wp-includes/cron.php	Retrieves a scheduled event.
apply_filters() wp-includes/plugin.php	Calls the callback functions that have been added to a filter hook.

Changelog

Changelog
Version	Description
5.1.0	'get_schedule' filter added.
2.1.0	Introduced.

User Contributed Notes

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Contributed by Andrei G. — 8 years ago
I suggest that maybe the documentation here should be updated to say that the function returns false if no RECURRENCE.

I came across an issue lately with a plugin that was scheduling a single event and using wp_get_schedule() to check for the existence of a schedule.
```
if ( !wp_get_schedule( 'groups_file_access_session_delete_transients' )) {
			
			wp_schedule_single_event( time() + self::SCHEDULE, 'groups_file_access_session_delete_transients' );
		}
```
It took me a while to understand that wp_get_schedule() does not return the actual timestamp like wp_next_scheduled(), but the recurrence value, if any (hourly, daily, etc.).

As such, in the example above, the scheduling of single events was happening on every single call, causing for the cron field in the database to become gigantic.

Since wp_get_schedule() seems to not see single events (since they have no recurrence) and will always return false for single events, it is somewhat confusing.

I suspect people would expect for wp_get_schedule() to work like wp_next_scheduled(), but that’s not the case.
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0

Contributed by Codex — 7 years ago

Basic Examples

// If you previously added for example:
// wp_schedule_event( current_time( 'timestamp' ), 'hourly', 'my_hourly_event' );

$schedule = wp_get_schedule( 'my_hourly_event' );

// $schedule == 'hourly'

// Or this if you created something like this:
// wp_schedule_single_event( current_time( 'timestamp' ), 'hourly', 'my_hourly_event', array( 'some_arg' ) );

$schedule = wp_get_schedule( 'my_hourly_event', array( 'some_arg' ) );

// $schedule == 'hourly'

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