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<?php |
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/** |
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* Plugin Name: PageSpeed Purge Button |
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* Plugin URI: https://github.com/salaros/wp-purge-pagespeed-button |
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* Description: One-click PageSpeed cache purging using an admin bar button |
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* Version: 10.0.5 |
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* Author: Zhmayev Yaroslav aka Salaros |
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* Author URI: https://salaros.com |
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* License: MIT |
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* License URI: https://opensource.org/licenses/MIT |
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* Text Domain: wp-purge-pagespeed-button |
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* Domain Path: /languages/ |
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*/ |
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; // Exit if accessed directly. |
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} |
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class PageSpeedPurge { |
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public function __construct() { |
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// Enqueue css and js files |
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$action = ( ! is_admin() && is_admin_bar_showing() ) |
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? 'wp_enqueue_scripts' |
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: 'admin_enqueue_scripts'; |
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add_action( $action, array( $this, 'embed_admin_assets' ), 101 ); |
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// Add 'Clear Redis cache' button to the admin bar |
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add_action( 'admin_bar_menu', array( $this, 'add_admin_bar_button' ), 101 ); |
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// Load plugin textdomain |
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add_action( 'plugins_loaded', array( $this, 'load_plugin_textdomain' ) ); |
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} |
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public function embed_admin_assets() { |
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// This is where you can add your CSS/JS entries for wp-admin UI |
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$plugin_url = plugin_dir_url( __FILE__ ); |
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$asset_suffix = ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) ? '' : '.min'; |
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wp_enqueue_style( 'admin-styles', sprintf( '%s/assets/wp-purge-pagespeed-button%s.css', $plugin_url, $asset_suffix ) ); |
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wp_enqueue_script( 'admin-styles', sprintf( '%s/assets/wp-purge-pagespeed-button%s.js', $plugin_url, $asset_suffix ), array( 'jquery' ) ); |
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} |
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public function add_admin_bar_button( $wp_admin_bar ) { |
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$args = [ |
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'id' => 'pagespeed_purge', |
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'href' => '#pagespeed_purge', |
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'title' => __( 'Purge Pagespeed Cache', 'wp-purge-pagespeed-button' ), |
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]; |
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$wp_admin_bar->add_menu( $args ); |
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} |
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public function load_plugin_textdomain() { |
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$textdomain = 'wp-purge-pagespeed-button'; |
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$plugin_locale = apply_filters( 'plugin_locale', get_locale(), $textdomain ); |
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$plugin_dir = dirname( __FILE__ ); |
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// wp-content/languages/plugin-name/plugin-name-ru_RU.mo |
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load_textdomain( $textdomain, sprintf( '%s/plugins/%s-%s.mo', WP_LANG_DIR, $textdomain, $plugin_locale ) ); |
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// wp-content/plugins/plugin-name/languages/plugin-name-ru_RU.mo |
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load_textdomain( $textdomain, sprintf( '%s/languages/%s-%s.mo', $plugin_dir, $textdomain, $plugin_locale ) ); |
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} |
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} |
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add_action( 'plugins_loaded', function () { |
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new PageSpeedPurge(); |
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} ); |
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The PSR-1: Basic Coding Standard recommends that a file should either introduce new symbols, that is classes, functions, constants or similar, or have side effects. Side effects are anything that executes logic, like for example printing output, changing ini settings or writing to a file.
The idea behind this recommendation is that merely auto-loading a class should not change the state of an application. It also promotes a cleaner style of programming and makes your code less prone to errors, because the logic is not spread out all over the place.
To learn more about the PSR-1, please see the PHP-FIG site on the PSR-1.