GatewayWorker的onMessage问题

class Events {
    public static function onMessage($client_id, $data)
    {
        // $data是客户端传来的请求，json格式类似 {"class":"User", "method":"login", "params":{"username":"abc","password":"123456"}}
        $package = json_decode($data, true);
        $class = new $package['class'];
        $method = $package['method'];
        $params = $package['params'];
        call_user_func_array([$class, $method], $params);
    }
}