I don't know about books, I don't remember reading much books for learning PHP for my final year project. I think it was the learn PHP in 21 days. The school taught us ASP and told us to do a project using PHP, lol the structure is about the same so it should be that hard.
There are good websites out there that have good tutorials and codes for PHP
www.hotscripts.com and
www.w3school.com are pretty good places to look at.
have fun with PHP