Over on the KillerPHP blog today, there's four new book review postings covering a wide range of books for all skill levels and all from O'Reilly.

The books he (quickly) reviews are:

• Build Your Own Database Driven Website Using PHP & MySQL
• PHP Hacks
• Programming PHP, Second Edition
• Learning PHP & MySQL

Overall, he enjoyed and would recommend the books, but each of them definitely has their place in a developer's learning process as well as their own unique fit as far as what the developer needs (ex. quick hacks versus general information).