参见英文答案 > Remote file size without downloading file                                    13个
我正在使用此代码在PHP中获取图像大小,它正在为我完美工作.

$img = get_headers("http://ultoo.COM/img_single.PHP",1);
$size = $img["Content-Length"];
echo $size;

但是如何通过CURL获得这个？
我试过这个却行不通.

$url = 'http://ultoo.com/img_single.PHP';
$ch = curl_init();
 curl_setopt($ch,CURLOPT_URL,$url);
 curl_setopt($ch,CURLOPT_HEADER,1);
 curl_setopt($ch,CURLOPT_HTTPHEADER,"Content-Length" );
 //curl_setopt($ch,CURLOPT_NOBODY,CURLOPT_RETURNtransfer,1);
 $result = curl_exec($ch);

 $filesize = $result["Content-Length"];

  curl_close($ch);

  echo $filesize;

HTTP/1.1 200 OK
Date: Tue,04 Jun 2013 03:12:38 GMT
Server: apache/2.2.15 (red hat)
X-Powered-By: PHP/5.3.3
Set-Cookie: PHPSESSID=rtd17m2uig3liu63ftlobcF195; path=/
Expires: Thu,19 Nov 1981 08:52:00 GMT
Cache-Control: no-Store,no-cache,must-revalidate,post-check=0,pre-check=0
Pragma: no-cache
Content-Length: 211
Content-tyPE: image/png