Christian Stocker has this new post today detailing some of his experiences with the DOM XML functionality in PHP5.

From time to time I see people trying to compile domxml (from PHP 4) for PHP 5. While it basically works and is technically possible, I highly recommend to not even try to go this route. There is a very high potential for conflicts with the new dom extension or any other libxml2 based extension. If not today, then maybe in later releases.

But one thing is for sure: domxml isn't maintained/developed anymore and you won't get any support from me in getting that to work.

This changeover from the older DOM functionality to the new cause quite a stir when it was introduced, but now that things have settled down, other newer XML technologies have blazed those new trails (like SimpleXML)...