下载文件

public function downLoadAction(){
        $request = $this->getRequest();
        $filePath = $request->get('filePath');
        header('Content-Type:application/octet-stream');
        header('Content-Disposition: attachment; filename='.basename($filePath));
        $file = fopen($filePath,'rb');
        print_r(fread($file,filesize($filePath)));
        fclose($file);
    }