The author of MySQL Cookbook Paul DuBois is one of the first group of contributors of MySQL online reference manuals, who has written many classic books about MySQL. It is important to note that this book isn't to teach you how to develop a complete and complex application; on the contrary, it is to help you overcome various problems had stumped you in MySQL database development. Therefore, it is suitable for all related personnels engaged in the development of database technology to read. And it has became one of must-read books for MySQL developers.
As a representative of open source software, MySQL had already become the world's most popular DBMS (database managing system) long time ago. After Sams Teach Yourself SQL in 10 Minutes (AKA: SQL Crash Course), MySQL Crash Course became another classic bestseller. This book is actually written by Ben Forta at the requests from many readers, and specifically for MySQL users.
The classic PHP has won a rebirth, so it's time for the modern PHP to throw away its old burden and follow better practices. But almost all the existing PHP books and online tutorials have been out of date for a long time, such that it is difficult to reflect the new features and good practices of modern PHP.
PHP 5 Power Programming is a classic must-read authoritative book with 720 pages of content published in 2004, cooperatively written by 3 PHP masters (PHP 5's chief designer - Andi Gutmans, PEAR's founder - Stig Saether Bakken and PHP's core contributor - Derick Rethans). Now its full copyright has been completely free.
For developing web-based and database driven high-performance, dynamic Web applications at express speed, PHP (powerful scripting language) and MySQL (quick and reliable database) are absolutely the only pair of best partners. Tutorials about them, I came close to forget this classic bible-level PHP and MySQL Web Development, Fourth Edition (although a bit old without involving the newest features).