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фильтр не описан

action_scheduler_queue_runner_flush_cache хук-фильтр . WC 1.0

Running large batches can eat up memory, as WP adds data to its object cache.

If using a persistent object store, this has the side effect of flushing that as well, so this is disabled by default. To enable:

add_filter( 'action_scheduler_queue_runner_flush_cache', '__return_true' );

Использование

add_filter( 'action_scheduler_queue_runner_flush_cache', 'filter_function_name_3425' );
function filter_function_name_3425( $false ){
	// filter...

	return $false;
}
$false
-

Где вызывается хук

ActionScheduler_QueueRunner::clear_caches()
action_scheduler_queue_runner_flush_cache
woocommerce/includes/libraries/action-scheduler/classes/ActionScheduler_QueueRunner.php 102
if ( ! wp_using_ext_object_cache() || apply_filters( 'action_scheduler_queue_runner_flush_cache', false ) ) {

Где используется хук (в ядре WC)

Использование не найдено.