卷曲下载有输出fopen脚本

I want to download file via FTP with curl. It's done but it returns output string. How do i remove it? There's the output :

-rw-r--r-- 1 ftp ftp 50266 Dec 18 10:38 jkegiatan10.jpg -rw-r--r-- 1 ftp ftp 158392 Dec 18 09:45 jkegiatan19.jpg -rw-r--r-- 1 ftp ftp 50266 Dec 18 10:38 jkegiatan10.jpg -rw-r--r-- 1 ftp ftp 158392 Dec 18 09:45 jkegiatan19.jpg -rw-r--r-- 1 ftp ftp 50266 Dec 18 10:38 jkegiatan10.jpg -rw-r--r-- 1 ftp ftp 158392 Dec 18 09:45 jkegiatan19.jpg

The code : set_time_limit(0); $fp = fopen ($dwnpath, 'wb') ; $ch = curl_init(str_replace(" ","%20",$url));

    curl_setopt($ch, CURLOPT_USERPWD, $auth );
    curl_setopt($ch, CURLOPT_TIMEOUT, 1000);
    curl_setopt($ch, CURLOPT_FILE, $fp) ; 
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

    curl_exec($ch); // get curl response
    curl_close($ch);
    fclose($fp);
    return $filename;</code>

Thanks so much, Regards