How to impliment a Part-of-Speech (POS) tagger

Question

I\'m looking for the best PHP-based way to scan a lot of text entries (classifieds) and pull out keywords - anyone know about Part-of-Speech tagging? Is there a PHP-ish way

Answer 1

Ian Barber has implemented a Brill Tagger in PHP, which he presents on his PHP/ir site where he describes using it to analyse tweets.