If you're strong in PHP, there's the Slim Framework[0] which I've used on a couple of sites. It's not a full MVC framework though, but there's always an ORM[1] to get what you need out of DB integration.

If you need a full MVC, then Django and Rails are both good.

[0]: http://www.slimframework.com/

[1]: http://propelorm.org/