A Must-use plugin to filter active plugins in on a per-page basis.

plugin-filter.php

<?php
/**
 * @package active-plugins
 * @version 1.0
 *
 * Plugin Name: Active Plugins
 * Plugin URI: http://wordpress.org/extend/plugins/#
 * Description: This is a development plugin 
 * Author: Carlo Daniele
 * Version: 1.0
 * Author URI: https://carlodaniele.it/
 */

// shortcode to list active plugins 
add_shortcode( 'activeplugins', function(){
	
	$active_plugins = get_option( 'active_plugins' );
	$plugins = "";
	if( count( $active_plugins ) > 0 ){
		$plugins = "<ul>";
		foreach ( $active_plugins as $plugin ) {
			$plugins .= "<li>" . $plugin . "</li>";
		}
		$plugins .= "</ul>";
	}
	return $plugins;
});

$request_uri = parse_url( $_SERVER['REQUEST_URI'], PHP_URL_PATH );

$is_admin = strpos( $request_uri, '/wp-admin/' );

if( false === $is_admin ){

	// filter active plugins
	add_filter( 'option_active_plugins', function( $plugins ){

		global $request_uri;

		$is_contact_page = strpos( $request_uri, '/contact/' );

		// change elements according to your needs
		$myplugins = array( 
			"contact-form-7/wp-contact-form-7.php", 
			"code-snippets/code-snippets.php",
			"query-monitor/query-monitor.php",
			"autoptimize/autoptimize.php" 
		);

		if( false === $is_contact_page ){
			$plugins = array_diff( $plugins, $myplugins );
		}

		return $plugins;

	} );
}

it did not work with me (looks like another caching plugin is interfering, I have w3t, varnish)
also, it removes the word "contact" if it is in the main menu and when typing the url contact it redirects to main page

https://wordpress.org/support/plugin/wp-asset-clean-up/

is better indeed

Consider that this plugin is just an example supporting a tutorial. It's not meant to be used in production. If needed, the developer should carefully test the plugin on his own installation before putting it at work in production. The plugin has been successfully tested on several installations, but it could not be tested under every conditions.

This one is for plugins. https://wordpress.org/support/plugin/wp-asset-clean-up/ is for css/js. If you for need css/js you can also use gonzales.
@carlodaniele do you know an alternative plugin like yours? Thank you!

This won't work, you can't send emails (CF7) breaks the plugin

This one is for plugins. https://wordpress.org/support/plugin/wp-asset-clean-up/ is for css/js. If you for need css/js you can also use gonzales.
@carlodaniele do you know an alternative plugin like yours? Thank you!

See the following:
https://wordpress.org/plugins/plugin-load-filter/
https://wordpress.org/plugins/plugin-organizer/

This won't work, you can't send emails (CF7) breaks the plugin

The code has been reviewed and updated. Check it again

Hi,
Is there a way to manage pages not by URL but by ID (using $page_id = get_queried_object_id(); or similar)? The issue is that on a front page you do not have any URL and in my case it's much easier to manage them by ID's rather then by URL.

Thanks in advance.

Thanks for this snippet it is working, but I need some help please.
I couldn't change the fact that it disables the plugins on all pages && not like in the conditional statement listed in this code

Hi @carlodaniele,

I am developing a site where I am using the SEOPress SEO plugin and WPFORO forum plugin. These two don't play well together because WPFORO also has built in forum functionalities and I need to disable SEOPress on my forum pages that starts with https://domain.com/forums*

Now coming to the point, I have no idea how to integrate your code and I was wondering if you are available for PAID integration of this script.

For context:

This is the only exclusion I want - No SEOPress plugin on pages starting with https://domain.com/forums/ and https://domain.com/forums/*

I am using WP-Rocket plugin but the forum pages are excluded

I would appreciate a reply.

Jimmy

Mate you are awesome!

Salve, in $myplugins = array si specificano i plugin da disabilitare in quella determinata pagina o i plugin consentiti? Per specificare l'uri della Home Page basta inserire '/' come indirizzo? Grazie

As it is today, I am finding the code snippet will indeed deactivate the chosen plugins but will never reactivate them. Accessing the correctly associated URL does not turn them back on. You have to go into the admin panel and reactivate the plug-in after removing this code.

WordPress 5.4
PHP 7.4

As it is today, I am finding the code snippet will indeed deactivate the chosen plugins but will never reactivate them. Accessing the correctly associated URL does not turn them back on. You have to go into the admin panel and reactivate the plug-in after removing this code.

I experienced a similar problem when I was developing a very similar plugin. The NextGEN Gallery plugin was updating the active_plugins option at shutdown. My workaround was to run this at shutdown before NextGEN ran its logic.

do_action( 'activate_plugin', __FILE__);

Has anyone been able to get this to work with in_category() or has_term()? I am trying to make a MU plugin that disables plugins one posts and pages in certain categories.

Has anyone been able to get this to work with in_category() or has_term()? I am trying to make a MU plugin that disables plugins one posts and pages in certain categories.

@ryanhollister I believe the plugins will already be loaded before those things are determined. Parsing the page URL might be a workaround for categories if your permalink settings include the category name.

how about to unload plugins for product page with WooCommerce?