Simple RSS Reader in PHP

Can anyone suggest a very simple RSS reader in PHP? I would like to be able to easily understand how it works (with slightly limited knowledge of PHP!), and play with it a bit (specifically I would like to add a search function to search item titles). :)

http://www.google.com/search?q=simple+php+rss+reader&btnG=Search

I can use Google thank you, I was just asking for some recommendations...