PHP Ajax Framework

Any recommendation about this topic? I want to learn Ajax with PHP and (I guess) I need frameworks. I've of course visited PHP_Ajax_Frameworks (http://ajaxpatterns.org/PHP_Ajax_Frameworks) but I can't seem to decide what framework to learn as there are lots of them.

Anyone uses specifics? Mind telling the good ones? Thanks

No, you don't need frameworks. Most of them are pure bloat, anyway.

Learn how to do AJAX from the ground up in PHP and JavaScript; it's surprisingly easy.

Then decide if a framework/toolkit would make life easier or not.

Oh ok, thanks PG