Does anyone know a class or script that can extract the contents from an RSS file (a URL) and convert it to HTML for displaying. Ideally it should be able to take care of a couple of c开发者_运维知识库hores such as caching.

EDIT

Seems like I also need a class that does things the other way round i.e. generates RSS from data... any array may be or from database data. Again, it should be able to perform caching and not query the database every time a feed is requested.

SimplePie is very handy for parsing RSS feeds. It has a nice sample for using it and displaying the feed.