PHP Reference: Beginner to Intermediate PHP5

A collection of over 250 PHP functions with clear explanations in language anyone can understand, followed with as many examples as it takes to understand what the function does and how it works.
This book includes numerous additional tips, the basics of PHP, MySQL query examples, regular expressions syntax, and two indexes to help you find information faster: a common language index and a function index.
When the internet is not around or you want a simpler explanation along with all the technical details, this book has all of that and more.