Aprium Software

I have been playing around with the Zend Framework recently can have been nothing but impressed with it. Its completely object orientated has truly left php 4 behind which is great. I am new to the MVC method of programming and am now a complete convert preferring the way it keeps presentation code away from business logic. 

The framework is feature rich but you load in classes as you need them so performance is always good. Normally when I'm learning something new I buy a book because information on the internet is so fragmented. However the documentation on the Zend site is excellent and has useful examples in every section.

There is also a CMS written on the back of ZF called digitalus, I found it useful to download the source of this project to see how a ZF project all ties in.