AMP_Blacklist_Sanitizer::replace_node_with_children PHP Метод

    private function replace_node_with_children($node, $bad_attributes, $bad_protocols)
    {
        // If the node has children and also has a parent node,
        // clone and re-add all the children just before current node.
        if ($node->hasChildNodes() && $node->parentNode) {
            foreach ($node->childNodes as $child_node) {
                $new_child = $child_node->cloneNode(true);
                $this->strip_attributes_recursive($new_child, $bad_attributes, $bad_protocols);
                $node->parentNode->insertBefore($new_child, $node);
            }
        }
        // Remove the node from the parent, if defined.
        if ($node->parentNode) {
            $node->parentNode->removeChild($node);
        }
    }