The third edition of this popular book is a selection of ready-made solutions to the most common problems in the PHP language. Material that is interesting to every developer is presented: basic data types, operations with them, cookies, PHP functions, user authentication, working with layers, security issues, speeding up programs, working on the network, creating graphic images, error handling, debugging scripts and writing tests. Recipes are given that cover the basics of object-oriented programming and new PHP functionality. Each recipe is self-sufficient and shows the entire path to solving the problem. The third edition of the book is completely updated for PHP 5.4, and also includes a number of new sections on working with data.