Code-Snippets-Functions/Execute a function on a child site/WordPress/delete-expired-cron-events-every-6-hours.txt

function modify_delete_expired_transients_schedule() {
    // Check if the cron event is scheduled
    if ( ! wp_next_scheduled( 'delete_expired_transients' ) ) {
        return;
    }
    // Unschedule the event
    wp_unschedule_event( wp_next_scheduled( 'delete_expired_transients' ), 'delete_expired_transients' );
    // Schedule the event to run every 6 hours
    wp_schedule_event( time(), 'six_hours', 'delete_expired_transients' );
}
add_action( 'init', 'modify_delete_expired_transients_schedule' );

function add_six_hours_interval( $schedules ) {
    // Add a new interval for every 6 hours
    $schedules['six_hours'] = array(
        'interval' => 21600, // 6 hours in seconds
        'display'  => __( 'Every 6 Hours' ),
    );
    return $schedules;
}
add_filter( 'cron_schedules', 'add_six_hours_interval' );