WordPress Selective Plugin Loader Must Use Plugin

A lightweight must use WordPress Plugin (WPMU) for Selective Plugin loading. This is a very simple and handy tool to improve WordPress page loading times, by disabling selected plugin programmatically, and only allowing them on specific URLs.

This is not a regular plugin, but a WPMU plugin, which means, that it can not be installed via the plugin menu.

This tool was originally created for ajaxsearchpro.com. For more WordPress PagesPeed optimizations check this article.

Installation

Copy the wpmu-selective-plugin-loader folder to the /wp-content/mu-plugins/ directory. If the mu-plugins directory does not exist, then create it first.

The mu-plugins directory automatically loads any PHP files in it, but not the ones in subdirectories, so you will need to load it. For that, create a load.php file in your mu-plugins directory, and add this:

<?php // mu-plugins/load.php
require WPMU_PLUGIN_DIR.'/wpmu-selective-plugin-loader/plugin.php';

This will automatically include the plugin every time.

Configuration

All you need to change is the plugin.php file. Open up the mu-plugins/wpmu-selective-plugin-loader/plugin.php file in your favourite editor (or even notepad) and let's get to it.

After the line // ONLY EDIT BELOW: you will find the init class and it accepts two array parameters:

Plugins to disable by default
List of URLs where specific plugins should be enabled.
1. IMPORTANT Parts of URL are also matched!
2. Use regex expressions for extra control PHP preg-match docs

Example 1

You want to disable WooCommerce everywhere, except for the shop page and the product pages. The shop located on the /shop/ URL and the product pages have the /product/ prefix.

//  ONLY EDIT BELOW:
new SelectivePluginLoader(
	array(
		'woocommerce' => 'woocommerce/woocommerce.php',				// WooCommerce
	),
	array(
		'woocommerce' => array('/shop/', '/product/'),
	)
);

Example 2

On top of WooCommerce, you also want to allow The Events Calendar on the /events/ URL and on the individual event pages, which use the /event/ prefix.

//  ONLY EDIT BELOW:
new SelectivePluginLoader(
	array(
		'events' => 'the-events-calendar/the-events-calendar.php',	// The Events Calendar
		'woocommerce' => 'woocommerce/woocommerce.php',				// WooCommerce
	),
	array(
		'events' => array('/events/', '/event/'),
		'woocommerce' => array('/shop/', '/product/'),
	)
);

Example 3

Use regex to allow the Ajax Search Lite plugin on the Wordpress home page and the /search page, but not on any of the blog posts.

//  ONLY EDIT BELOW:
new SelectivePluginLoader(
        array(
                'ajax-search-lite' => 'ajax-search-lite/ajax-search-lite.php'
        ),
        array(
                'ajax-search-lite' => array('/?$', '/search')
        )
);

Example 4

Use regex to only allow the Monarch social sharing plugin on blog posts only (not on the home page).

//  ONLY EDIT BELOW:
new SelectivePluginLoader(
        array(
                'monarch' => 'monarch/monarch.php'
        ),
        array(
                'monarch' => array('/[^/]+/?$')
        )
);

Example 5

Use regex to only allow the Context related posts plugin on blog posts but not specific pages with URLs like /search and /faq

new SelectivePluginLoader(
        array(
                'contextual-related-posts' => 'contextual-related-posts/contextual-related-posts.php'
        ),
        array(
                'contextual-related-posts' => array('(?!/(faq|search))/.+')
        )
);

timler/wpmu-selective-plugin-loader