Jetpack_Sync_Actions::sanitize_filtered_sync_cron_schedule PHP Метод

    static function sanitize_filtered_sync_cron_schedule($schedule)
    {
        $schedule = sanitize_key($schedule);
        $schedules = wp_get_schedules();
        // Make sure that the schedule has actually been registered using the `cron_intervals` filter.
        if (isset($schedules[$schedule])) {
            return $schedule;
        }
        return self::DEFAULT_SYNC_CRON_INTERVAL_NAME;
    }