Library to edit odt documents in php

I try to edit ODT-documents programmaticly in PHP. In fact I just want to do some text replacement and adding new rows in a table.

I know that a normal ODF document is an archive containing XML-files. But before I reinvent the wheel: is there any library which does most of the tasks? Or should I just parse the XML-file in a DOM-parser and modify it?

http://en.wikipedia.org/wiki/OpenDocument_software lists several PHP tools for working with ODT.

• Docvert
• OpenDocumentPHP
• odf-xslt
• OpenDocument
• ods-php
• odtPHP

I haven't used any of these, I'm just giving you the list. You'll have to evaluate them to see if they have the specific features you need.