Can someone write a php script to write to a XML document in the following format

programming
1

Hi

i have a form that once filled in needs to update a XML document

can anyone out there write this for me ??

basically i have a news ticker that reads a XML document to get its information.

Now i need to be able to update the XML document via a HTML Form

the xml document is formatted in the following way

<?xml version=“1.0” encoding=“utf-8” standalone=“yes”?>
<images>
<item>
<news>test this</news>
<url>www.google.com</url>
</item>
<item>
<news>News item 2</news>
<url>http://www.news item 2.com</url>
</item>
</images>

if anyone could help i would greatly appreciate it!
Cheers