使用PHP DOMElement对象检索标记的源

Is there a way to retrieve the raw tag source for a DOMElement instance? I've gotten a list of nodes matching an XPath query using DOMXpath::query(), and then have accessed a single DOMElement with DOMNodeList::item($i). Essentially I want to get the tag source for DOMElement as a string like:

<tag attr1="whatever" attr2="somethingElse" />

echo $node->ownerDocument->saveXML($node);