Microweber\Utils\Parser::isolate_head PHP Method

    public function isolate_head($l)
    {
        require_once __DIR__ . DIRECTORY_SEPARATOR . 'lib' . DIRECTORY_SEPARATOR . 'phpQuery.php';
        $pq = \phpQuery::newDocument($l);
        $l = pq('head')->eq(0)->html();
        return $l;
    }