creating a rss feed with php

I have a list of tweets which I want to feed to twitter ev开发者_StackOverflow中文版ery hour or so. WHat si the best way to go about makign an rss fee where I can insert text/tweets to be randomally posted every hour??

There is excellent library out there for that SimplePie

SimplePie is a very fast and easy-to-use class, written in PHP, that puts the 'simple' back into 'really simple syndication'. Flexible enough to suit beginners and veterans alike, SimplePie is focused on speed, ease of use, compatibility and standards compliance.