xml_get_nodeSet($xpathObj,$path,$index=0)

/**
* Gets a nodeset.
*
* @param object $xpathObj.
* @param string $path.
* @param int $index - defaults to 0.
* @return string.
*/
function xml_get_nodeSet($xpathObj,$path,$index=0){
$nodes = $xpathObj->xpath_eval($path); // php 4
return $nodes->nodeset;
}