JN_0031：渲染平台php5远程漏洞处理

        // 获取控制器名
        $controller = strip_tags($result[1] ?: $config[‘default_controller‘]);
        
         if (!preg_match(‘/^[A-Za-z](\w)*$/‘, $controller)) {
            throw new HttpException(404, ‘controller not exists:‘ . $controller);
        }

        $controller = $convert ? strtolower($controller) : $controller;