0); curl_setopt($ch, CURLOPT_MAXREDIRS, $mr); } else { curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false); if ($mr > 0) { $newurl = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL); $rch = curl_copy_handle($ch); curl_setopt($rch, CURLOPT_HEADER, true); curl_setopt($rch, CURLOPT_NOBODY, true); curl_setopt($rch, CURLOPT_FORBID_REUSE, false); curl_setopt($rch, CURLOPT_RETURNTRANSFER, true); do { curl_setopt($rch, CURLOPT_URL, $newurl); $header = curl_exec($rch); if (curl_errno($rch)) { $code = 0; } else { $code = curl_getinfo($rch, CURLINFO_HTTP_CODE); if ($code == 301 || $code == 302) { preg_match('/Location:(.*?)\n/', $header, $matches); $newurl = trim(array_pop($matches)); } else { $code = 0; } } } while ($code && --$mr); curl_close($rch); if (!$mr) { if ($maxredirect === null) { trigger_error('Too many redirects. When following redirects, libcurl hit the maximum amount.', E_USER_WARNING); } else { $maxredirect = 0; } return false; } curl_setopt($ch, CURLOPT_URL, $newurl); } } return curl_exec($ch); } function getURLMetadata($url) { //allow only http(s) and (s)ftp $protocols = '/^[hs]{0,1}[tf]{0,1}tp[s]{0,1}\:\/\//i'; //if not (allowed) protocol is given, assume http if(preg_match($protocols, $url) == 0) { $url = 'http://' . $url; } $metadata['url'] = $url; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); $page = curl_exec_follow($ch); curl_close($ch); @preg_match( "/