tidy_parser.php
private function walkChildren($node)
    {
        if ($node->hasChildren()) {
            foreach ($node->child as $child) {
                $this->walkTree($child);
            }
        }
    }
private function walkChildren($node)
    {
        if ($node->hasChildren()) {
            foreach ($node->child as $child) {
                $this->walkTree($child);
            }
        }
    }
Helper method for traversing the XML tree.

@param object $node     Tidy XML node.