Framework for PHP

I would use codeigniter

Zend is the one I use most, but isn't to easy to learn. Also CakePHP is a nice one. But will can choose the right framework after you work with all or some of them.

go for kohanaphp.com
built-like CodeIgniter, but full php-5 and even more lightweight!
you cant go wrong with it !

I have tried code igniter and cakephp. Much prefered code igniter. No experience really in PHP but using the documentation and forum managed to create everything I wanted so far.

I'd recommend CodeIgniter or CakePHP

I've been working with CodeIgniter quite a bit recently and found it extremely easy to use and so far havn't got a bad thing to say about it.

I recommend CakePHP.

http://www.codeigniter.com/ ALL THE WAY!!

There are alot of good php frameworks. CakePHP and codeigniter are well documented. I would suggest to choose one of these mature frameworks. They are easy to set up and do some quick testing and see for yourself which one suits you best.