Excluding specific cookies such as woocommerce_cart_hash

You need to write a Supercache plugin that looks for the woocommerce_cart_hash and then sets the DONOTCACHEPAGE constant, or adds that cookie to the list of cookies used by the plugin as an index to the cache. Look for the “wp_cache_get_cookies_values” action in plugins/searchengine.php for code that does something similar.

Here’s a page describing how to write such a plugin:

https://github.com/Automattic/wp-super-cache/wiki/Writing-WP-Super-Cache-Plugins

Hi Donncha, thanks for the info. If I was to add the following code to wp-config.php would this work?

if(!empty($_COOKIE)) foreach($_COOKIE as $__name => $__value)
    if(stripos($__name, 'woocommerce_cart_hash') !== FALSE)
        { define('DONOTCACHEPAGE', TRUE); break; }
unset($__name, $__value);

Hi @quantum17

You should create simple must-use plugin (or use child theme). It’s much better than adding code into ‘wp-config.php’.

And you can write it into one line (which is faster):
isset( $_COOKIE['woocommerce_cart_hash'] ) && define( 'DONOTCACHEPAGE', true );

Thanks for your reply Sasa, I’m very basic with php so do I just put the following in a php file?

<?php 
isset( $_COOKIE['woocommerce_cart_hash'] ) && define( 'DONOTCACHEPAGE', true );
?>

Would greatly appreciate your help.

You should create simple PHP file (if you want to create your first plugin ?? ):

<?php
/**
 * Plugin Name: My first plugin
 * Version: 1.0.0
 * Plugin URI:
 * Description: Prevent caching if cookie ...
 * Author:
 * Author URI:
 * License: GPL v3
 */

if( !defined( 'ABSPATH') ) exit();

isset( $_COOKIE['woocommerce_cart_hash'] ) && define( 'DONOTCACHEPAGE', true );

You can replace Plugin Name and Description to something else. You will see it when you go on WP dashboard/plugins under Must-use plugins. Don’t put closing PHP tag ?> at the end of file because it can make unwanted ‘white-scape’ in HTML code.

Then just upload it in wp-content/mu-plugins/ (Create this directory if it doesn’t exist). You can choice any filename.

Also, it’s possible to add more code there if you need it.

I hope that helps,
Sasa

• This reply was modified 6 years, 11 months ago by Sa?a.

Thanks Sasa, really appreciate your help!