Ask HN: Please suggest me a PHP book

I'm not very smart & quite a slow learner. After coding static HTML based sites for 3 years now i am pretty confident with my CSS abilities & would like to move ahead learning PHP MySQL.

But seems like i can't never move beyond the variables chapter in online php tutorials, a real book might help me.

Would you recommend anything from here - http://search.oreilly.com/?q=php

I'm thinking may be the Head First one has easier language for me to understand. Books from Wrox seem difficult.