对pdf格式的流体资源进行写入文件

$url="http://xxxx.qmw111.com/init/output-agree.html?xId=267&number=JFB1575353880776397997&busId=1";
//        $newfname = "aaa.pdf";
        $file = fopen ($url, "rb");
        var_dump($file);
        if ($file) {
            $data=stream_get_contents($file);
           // $data1 = base64_encode($data);//转换
            echo $data1;
//            fwrite("/t_web/t_site/jfb_cc/test/web/aaa1.pdf", $data1);
            file_put_contents("/t_web/t_site/jfb_cc/test/web/aaa1.pdf", $data);
        }
        exit;