忽略内容类型：CURL中的应用程序/强制下载

Question

I need to read the size of a file but the server is forcing me to download it first. I note one of the response headers is Content-Type: application/force-download and that seems to bypass my curl inputs...

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_NOBODY, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
curl_setopt($ch,CURLOPT_TIMEOUT,1000);
curl_exec($ch);
$bytes = curl_getinfo($ch, CURLINFO_CONTENT_LENGTH_DOWNLOAD);
curl_close($ch);

Any ideas?

Answer 1

Curl conforms with the force-download header, but file_get_contents can be used to limit the file download download to only 1 byte. This solved the problem!

$postdata = http_build_query(
    array(
        'username' => "",
        'password' => ""
    )
);
$params = array(
    'http' => array
    (
      'method' => 'POST',
      'header'=>"Content-type: application/x-www-form-urlencoded
",
      'content' => $postdata
    )
);
$ctx = stream_context_create($params);
file_get_contents($url,false,$ctx,0,1);
$size = str_replace("Content-Length: ","",$http_response_header[4]);