"MagpieRSS, affectionately known as Magpie, is an RSS and Atom
parser for PHP. It allows you to display the newest articles from
websites with RSS or Atom feeds on your own site. This is a great
way to add new, fresh, and relevant information to your site. It
parses RSS 0.9, RSS 1.0, and has some support for RSS 2.0 as well
as Atom 0.3.
"In order to use Magpie your server must support PHP version
4.2.0 with XML support, or PHP5 with libxml2 support..."