'; libxml_use_internal_errors(true); $dom = new DOMDocument('1.0', 'UTF-8'); $dom->loadHTML($html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD); $xpath = new DOMXPath($dom); $link = $xpath->query('//input[@name="GEO_FOOTPRINT"]')->item(0); $val = $link->getAttribute('onclick'); preg_match('~[?&]uid=([^&\s]+)~', $val, $m); echo $m[1];