class DOMXPathFactory
{
    /**
     * @see http://www.whitebeam.org/library/guide/TechNotes/xpathtestbed.rhtm
     * @param string $location url or file html source
     * @return DOMXPath
     */
    public function create($location) {
        $doc = new DOMDocument();
        libxml_use_internal_errors(true);
        $doc->loadHTMLFile($location);
        return new DOMXPath($doc);
    }
}