WP Plugin MU Loader

Installation

composer require thefrosty/wordpress-mu-loader:^1.1

Loads regular plugins from the plugins' directory as "must-use plugins", enforcing their activity while maintaining the typical update flow. This file will take care of all necessary logic, including preventing activation/deactivation/deletion of those plugins as regular plugins.

Benefits

• Enforce plugins to be active throughout the entire installation.
• Continue receiving automated update notifications.
• Be able to comfortably update those plugins from the WordPress dashboard.
• The plugin activation, deactivation, and uninstallation routines are executed as usual.

Requirements

• WordPress >= 6.3
• PHP >= 8.0

Usage

• You can then pass basenames of the plugins you would like to load as MU plugins to the constructor call in the wp_plugin_mu_loader() function, as an array.
• A plugin basename consists of the plugin directory name, a trailing slash, and the plugin main file name, for example wordpress-seo/wp-seo.php, jetpack/jetpack.php, or woocommerce/woocommerce.php.
• Alternatively, if you don't want to tweak the code of the function itself, you can also access the loader from the outside: Retrieve the instance via wp_plugin_mu_loader() and then call its load_plugin() method, passing a single plugin basename string to it.

Example

wp_plugin_mu_loader()->loadPlugin( 'custom-login/custom-login.php' );

OR, create a git managed mu-plugin:

<?php declare(strict_types=1);
/**
 * @wordpress-muplugin
 * Plugin Name: WordPress Plugins as Must-use
 * Description: Require regular WordPress plugins as "must-use" plugins.
 * Version: 1.0.0
 * Author: Austin Passy
 * Author URI: https://github.com/thefrosty
 */

namespace TheFrosty;

use InvalidArgumentException;
use RuntimeException;
use function add_action;
use function array_filter;
use function array_walk;
use function file_exists;
use function function_exists;
use function wp_plugin_mu_loader;
use const WPMU_PLUGIN_DIR;

/**
 * Returns an array of basename formatted plugins to set as "must-use".
 * @return array
 */
function getRequiredPlugins(): array
{
    // Add plugins to the array here...
    return array_filter([
        'disable-emojis/disable-emojis.php',
        'soil/soil.php',
        'custom-login/custom-login.php',
        'wp-login-locker/wp-login-locker.php',
    ]);
}

add_action('muplugins_loaded', static function (): void {
    if (
        !function_exists('wp_plugin_mu_loader') &&
        // You only need the file_exists/require if not using autoloading...
        file_exists(WPMU_PLUGIN_DIR . '/wordpress-mu-loader/wp-plugin-mu-loader.php')
    ) {
        require_once WPMU_PLUGIN_DIR . '/wordpress-mu-loader/wp-plugin-mu-loader.php';
    }
    $loader = wp_plugin_mu_loader()
    $plugins = getRequiredPlugins();
    array_walk($plugins, static function (string $plugin_basename) use ($loader): void {
        try {
            $loader->loadPlugin($plugin_basename);
        } catch (InvalidArgumentException|RuntimeException $exception) {
            // Log something here?
        }
    });
});