<?php
function curl_get_file_size( $url ) {
$result = -1;
$curl = curl_init( $url );
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] (ddd)/", $data, $matches ) ) {
$status = (int)$matches[1];
}
if( preg_match( "/Content-Length: (d+)/", $data, $matches ) ) {
$content_length = (int)$matches[1];
}
if( $status == 200 || ($status > 300 && $status <= 308) ) {
$result = $content_length;
}
}
return $result;
}
?>