This book is a hands-on, go-to-guide that Walks you through installing the applications files from the CD-ROM and setting your programming environment Contains all the code needed to create seven applications: User authentication with HTTP User login On-line catalog shopping cart content management system Web forum Building and managing a mailing list (on CD-ROM) that automatic programming process and walks you through building an application from scratch until the end Explains how to write secure code features complete code not just snippets?, but neatly assembled packages with? instant? real-world function Shows how to build applications in two forms - procedural and object-oriented programming - providing programmers who want to switch to object-oriented method of coding (! New in PHP 5) with the essential know-how Includes companion CD-ROM that contains every line of code in the application of the book plus a bonus chapter that shows how to build mailing lists Information on each application including discussion of the issues, the structure of the database, code listings, and an explanation of the code.