note 92462 added to function.filesize

Here's the best way (that I've found) to get the size of a remote file. Note that HEAD requests don't get the actual body of the request, they just retrieve the headers. So making a HEAD request to a resource that is 100MB will take the same amount of time as a HEAD request to a resource that is 1KB. <?php $remoteFile = 'http://us.php.net/get/php-5.2.10.tar.bz2/from/this/mirror'; $ch = curl_init($remoteFile); curl_setopt($ch, CURLOPT_NOBODY, true); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_HEADER, true); curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); //not necessary unless the file redirects (like the PHP example we're using here) $data = curl_exec($ch); curl_close($ch); if ($data === false) { echo 'cURL failed'; exit; } $contentLength = 'unknown'; $status = 'unknown'; if (preg_match('/^HTTP\/1\.[01] (\d\d\d)/', $data, $matches)) { $status = (int)$matches[1]; } if (preg_match('/Content-Length: (\d+)/', $data, $matches)) { $contentLength = (int)$matches[1]; } echo 'HTTP Status: ' . $status . "\n"; echo 'Content-Length: ' . $contentLength; ?> Result: HTTP Status: 302 Content-Length: 8808759 ---- Server IP: 209.41.74.194 Probable Submitter: 70.179.22.151 ---- Manual Page -- http://www.php.net/manual/en/function.filesize.php Edit -- https://master.php.net/note/edit/92462 Del: integrated -- https://master.php.net/note/delete/92462/integrated Del: useless -- https://master.php.net/note/delete/92462/useless Del: bad code -- https://master.php.net/note/delete/92462/bad+code Del: spam -- https://master.php.net/note/delete/92462/spam Del: non-english -- https://master.php.net/note/delete/92462/non-english Del: in docs -- https://master.php.net/note/delete/92462/in+docs Del: other reasons-- https://master.php.net/note/delete/92462 Reject -- https://master.php.net/note/reject/92462 Search -- https://master.php.net/manage/user-notes.php