Comments on snippet: 'Get Remote Filesize'

neirauni said on 6/28/11

Tue, 28 Jun 2011 03:36:14 GMT

function remotefilesize($url) { $ch = curl_init($url); curl_setopt($ch, CURLOPT_HEADER, 1); curl_setopt($ch, CURLOPT_NOBODY, 1); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_exec($ch); // get some variables $status = curl_getinfo($ch, CURLINFO_HTTP_CODE); // 200 $filesize = curl_getinfo($ch, CURLINFO_CONTENT_LENGTH_DOWNLOAD); //filesize $fimemime = curl_getinfo($ch, CURLINFO_CONTENT_TYPE); //mimetype, ex: image/jpeg curl_close($ch); if( 200 != $status ) throw new Exception('Arquivo não encontrado!'); return $filesize; } printf('PHP logo has %s bytes', remotefilesize("http://br2.php.net/images/php.gif") );

neirauni said on 6/28/11

Tue, 28 Jun 2011 03:35:31 GMT

neirauni said on 6/28/11

Tue, 28 Jun 2011 03:34:14 GMT

Hi, I found this code very useful also. I got the arharp's version and changed a little bit, here my version: Regards.

arharp said on 4/19/10

Mon, 19 Apr 2010 16:45:00 GMT

You can do this without using an output buffer by setting CURLOPT_RETURNTRANSFER to 1 Like so: function remote_filesize($url, $user = "", $pw = "") { $ch = curl_init($url); curl_setopt($ch, CURLOPT_HEADER, 1); curl_setopt($ch, CURLOPT_NOBODY, 1); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); if (!empty($user) && !empty($pw)) { $headers = array('Authorization: Basic ' . base64_encode("$user:$pw")); curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); } $head = curl_exec($ch); curl_close($ch); $regex = '/Content-Length:\s([0-9].+?)\s/'; $count = preg_match($regex, $head, $matches); return isset($matches[1]) ? $matches[1] : false; }

adulau said on 12/28/06

Thu, 28 Dec 2006 02:42:57 GMT

Quite useful. In that example, you'll need curl compiled with PHP. Sometimes curl is not available, the same behavior could be achieved using a simple socket (fsockopen) connection in PHP. Using a HEAD request (fputs the corresponding request Headers) and get the value from the headers itself (matching Content-Length:) (as described in line 19. of the curl example). PHP 5 is including nifty function for HTTP connection handling and parsing the headers.

There is lengthy discussion about remote filesize on : http://be.php.net/function.filesize