Is there a way to get the size of a remote file http://my_url/my_file.txt without downloading the file?
Solution:
Found something about this :
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/** * Returns the size of a file without downloading it, or -1 if the file * size could not be determined. * * @param $url - The location of the remote file to download. Cannot * be null or empty. * * @return The size of the file referenced by $url, or -1 if the size * could not be determined. */function curl_get_file_size( $url ) { // Assume failure. $result = -1; $curl = curl_init( $url ); // Issue a HEAD request and follow any redirects. curl_setopt( $curl, CURLOPT_NOBODY, true ); curl_setopt( $curl, CURLOPT_HEADER, true ); curl_setopt( $curl, CURLOPT_RETURNTRANSFER, true ); curl_setopt( $curl, CURLOPT_FOLLOWLOCATION, true ); curl_setopt( $curl, CURLOPT_USERAGENT, get_user_agent_string() ); $data = curl_exec( $curl ); curl_close( $curl ); if( $data ) { $content_length = "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 ) ) { $content_length = (int)$matches[1]; } // http://en.wikipedia.org/wiki/List_of_HTTP_status_c... if( $status == 200 || ($status > 300 && $status <= 308) ) { $result = $content_length; } } return $result;}?>
Usage:
$file_size = curl_get_file_size( "http://abc.com/questions/2602612/php-remote-file-size-without-downloading-file" );
Source:
PHP: Remote file size without downloading file