Unable to insertBefore on an XML file

Question

I\'m trying to write a script that will update an RSS XML file. I want it to take the existing file and add a new item to the top of the items list. I\'ve previous gotten it to

Answer 1

"What am I missing?"

The output: $rssDoc->save( 'filename.xml' ) http://php.net/domdocument.save.php