hellofromtonya

/**
 * Do a hard unregister of an object's callback for the specified event name
 * and priority level.
 *
 * In WordPress, the callback key (or unique ID) is generated using the hash ID of
 * the object concatenated with the method name.  In the event that you do not have
 * the object itself, then we use this hard approach to first first the callback
 * function and then do the remove.
 *
 * This process works for both filter and action events.

tripflex

<?php
/**
 * Make sure the function does not exist before defining it
 */
if( ! function_exists( 'remove_class_filter' ) ){

	/**
	 * Remove Class Filter Without Access to Class Object
	 *
	 * In order to use the core WordPress remove_filter() on a filter added with the callback

RadGH

<?php

// UPDATE: Stefan from Stack Overflow has explained a better way to handle cart item data.
// See http://stackoverflow.com/a/32327810/470480

// ----------------------

/*
Instructions: