Iterative XML to array conversion

gistfile1.php

<?php

function iXml2array($xml)
{
    $result = array();
    $stack = array(array(&$result, &$xml));

    do {

        $frame = array_pop($stack);
        $data =& $frame[0];
        $node =& $frame[1];

        $namespaces = $node->getNamespaces();
        $namespaces[] = null;

        foreach ($namespaces as $namespace) {
            foreach ($node->attributes($namespace) as $key => $value) {
                $data['@attributes'][$key] = (string) $value;
            }
        }

        foreach ($node as $element) {
            if (count($element->children())) {
                $name = $element->getName();
                $data[$name] = array();
                $stack[] = array(&$data[$name], &$element);
            } else {
                $data[$element->getName()] = (string) $element;
            }
        }
    } while ($stack);

    return $result;
}

Now that I look at it, this won't work correctly with repeated nodes