/** * 类静态构造实例的唯一入口 * @params object app object * @params object model object * @return object b2c_order_reship的对象 */ public static function getInstance($app, $model) { if (is_object(self::$instance)) { return self::$instance; } self::$instance = new b2c_order_reship($app, $model); return self::$instance; }