DOMXML issues

[tg]

I've been stabbing at this for the past hour and I figured it out, but
there's some erratic behavior under certain conditions that I think I
should mention...

I used tidy to clean up an html document before reading it into an xml
document via DOMDocument->loadXML(). When I load the page via
loadXML(), the XPath won't return values at all for queries other than
"//" "*" or "." (such as //a, etc)

When I switch to DOMDocument->loadHTML(), it works fine.

I was wondering if anyone could give me a reason for this. It works
now, so I'm not complaining, just there was nothing in TFM to lead me
to believe this behavior would arise.

Thanks,

Using

PHP 5.2.0 with Suhosin-Patch 0.9.6.2 (cli) (built: Nov 30 2006
17:40:17)
Zend Engine v2.2.0, Copyright (c) 1998-2006 Zend Technologies