PEAR :: PEPr :: Details :: XML_Feed_Parser
XML_Feed_Parser is a package providing unified access to a range of XML-based syndication formats. At present it offers near-complete support for Atom 1.0, RSS1.0 and RSS2.0, and it should be straightforward to add support for other formats.
DraftにRSSやAtomを統一的に扱おうというParserがあがってます。
XML_RSSではAtom無理なのでProposal通って欲しいです。