PHP: Microframework under PHP 5.2.x?

Question

PHP

Hello habra-people.
I read about the Fat-Free Framework, I really like it, but it requires PHP 5.3, I can't switch to it at the moment for some reason.
Advise something similar, easier, only for PHP 5.2.
Requires minimal reasonable functionality - Ajax (AHAH), form generation and validation, MySQL, MongoDB or other NoSQL will be generally gorgeous.

Answer 1

Do you absolutely need mvc?
Try to take any framework for example ZF
and throw out everything superfluous from it
as an option to use libraries from there.

Answer 2

Check out Yii

Answer 3

flourishlib.com/ - minimalism, simplicity and great functionality.

Answer 4

www.limonade-php.net/
micromvc.com/
www.legendrefamily.org/blog/2009/08/php-micro-frameworks/

Answer 5

How about DooPHP ? Minimalistic, fast and with different buns (ajax)