QueryPath\DOMQuery::html PHP Method

    public function html($markup = null)
    {
        if (isset($markup)) {
            if ($this->options['replace_entities']) {
                $markup = \QueryPath\Entities::replaceAllEntities($markup);
            }
            // Parse the HTML and insert it into the DOM
            //$doc = DOMDocument::loadHTML($markup);
            $doc = $this->document->createDocumentFragment();
            $doc->appendXML($markup);
            $this->removeChildren();
            $this->append($doc);
            return $this;
        }
        $length = $this->size();
        if ($length == 0) {
            return;
        }
        // Only return the first item -- that's what JQ does.
        $first = $this->getFirstMatch();
        // Catch cases where first item is not a legit DOM object.
        if (!$first instanceof \DOMNode) {
            return;
        }
        // Added by eabrand.
        if (!$first->ownerDocument->documentElement) {
            return;
        }
        if ($first instanceof \DOMDocument || $first->isSameNode($first->ownerDocument->documentElement)) {
            return $this->document->saveHTML();
        }
        // saveHTML cannot take a node and serialize it.
        return $this->document->saveXML($first);
    }