A Programmer's Introduction to PHP 4.0
Published: 2001, Apress
478 pages Format: pdf
The sixteen chapters in this book delve into the many features that make PHP so popular, beginning with a thorough introduction of the general concepts and constructs of the language, then moving into issues pertaining to Web development, such as building dynamic pages, creating dynamic links, and database interfacing. Finally, attention is directed toward advanced Web development and the role PHP can play in it, discussing XML, JavaScript, COM objects, and security.
PHP 5 Power Programming
Published: 2005, Bruce Perens’ Open Source Series
700 pages Format: pdf
Written by one of PHP 5's co-creators and two leading PHP developers, this book is an introduction to the advanced features in PHP 5. It also includes an introduction to PHP 5 syntax. Though not aimed at novice programmers, web developers with experience in other high-level languages should find that this tutorial is all they need
in order to make the most of PHP 5.
Practical PHP Programming
Format: Wiki
The basis of the O'Reilly published: PHP in a Nutshell. This book covers topics like Simple variables and operators, Functions, Arrays, Objects, HTML Forms, Files, Databases, Cookies and Sessions, Multimedia, XML & XSLT, Output Buffering and Java and COM.
The PHP Cookbook
Format: HTML
An online book which implements the solutions from the Perl Cookbook in PHP. The book is a work in progress - at the time this link was added, the book was around 36% complete.