public static function init() { if (!self::$instance) { self::$instance = new self(); } return self::$instance; }
<?php /* Plugin Name: Offline Content Description: Allow your users to read your content even while offline. Plugin URI: https://github.com/delapuente/wp-offline-content Version: 0.5.0 Author: Mozilla Author URI: https://www.mozilla.org/ License: GPLv2 or later Text Domain: offline-content */ load_plugin_textdomain('offline-content', false, dirname(plugin_basename(__FILE__)) . '/lang'); include_once plugin_dir_path(__FILE__) . 'vendor/autoload.php'; include_once plugin_dir_path(__FILE__) . 'class-wp-offline-content-plugin.php'; if (is_admin()) { include_once plugin_dir_path(__FILE__) . 'class-wp-offline-content-admin.php'; WP_Offline_Content_Admin::init(); } WP_Offline_Content_Plugin::init();