advanced code snippet search

Get Remote Filesize

 / Published in: PHP
 

Retrieves the filesize of a remote file. I can't take the credit for this function. I grabbed it somewhere online a few years back. Don't remember where.

Expand | Embed | Plain Text 
  1. function remote_filesize($url, $user = "", $pw = "")
  2. {
  3. 	ob_start();
  4. 	$ch = curl_init($url);
  5. 	curl_setopt($ch, CURLOPT_HEADER, 1);
  6. 	curl_setopt($ch, CURLOPT_NOBODY, 1);
  7.  
  8. 	if(!empty($user) && !empty($pw))
  9. 	{
  10. 		$headers = array('Authorization: Basic ' .  base64_encode("$user:$pw"));
  11. 		curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
  12. 	}
  13.  
  14. 	$ok = curl_exec($ch);
  15. 	curl_close($ch);
  16. 	$head = ob_get_contents();
  17. 	ob_end_clean();
  18.  
  19. 	$regex = '/Content-Length:\s([0-9].+?)\s/';
  20. 	$count = preg_match($regex, $head, $matches);
  21.  
  22. 	return isset($matches[1]) ? $matches[1] : "unknown";
  23. }

Report this snippet  

Comments

RSS Icon Subscribe to comments
Posted By: adulau on December 28, 2006

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

Posted By: arharp on April 19, 2010

You can do this without using an output buffer by setting CURLOPT_RETURNTRANSFER to 1

Like so:

function remotefilesize($url, $user = "", $pw = "") { $ch = curlinit($url); curlsetopt($ch, CURLOPTHEADER, 1); curlsetopt($ch, CURLOPTNOBODY, 1); curlsetopt($ch, CURLOPTRETURNTRANSFER, 1);

if (!empty($user) && !empty($pw)) { $headers = array('Authorization: Basic ' . base64encode("$user:$pw")); curlsetopt($ch, CURLOPT_HTTPHEADER, $headers); }

$head = curlexec($ch); curlclose($ch);

$regex = '/Content-Length:\s([0-9].+?)\s/'; $count = preg_match($regex, $head, $matches);

return isset($matches[1]) ? $matches[1] : false; }

Posted By: neirauni on June 28, 2011

Hi, I found this code very useful also.

I got the arharp's version and changed a little bit, here my version:

Regards.

Posted By: neirauni on June 28, 2011

Posted By: neirauni on June 28, 2011

function remotefilesize($url) {

$ch = curlinit($url); curlsetopt($ch, CURLOPTHEADER, 1); curlsetopt($ch, CURLOPTNOBODY, 1); curlsetopt($ch, CURLOPTRETURNTRANSFER, 1); curlexec($ch);

// get some variables $status = curlgetinfo($ch, CURLINFOHTTPCODE); // 200 $filesize = curlgetinfo($ch, CURLINFOCONTENTLENGTHDOWNLOAD); //filesize $fimemime = curlgetinfo($ch, CURLINFOCONTENTTYPE); //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") );

You need to login to post a comment.