Learn how to use PHP, XSL, and JavaScript code to create a dynamic link graph based on data from RSS feeds.

This tutorial explains how to use Ajax with PHP and introduces the Simple Ajax Toolkit (Sajax), a tool written in PHP that lets you integrate server-side PHP with JavaScript that makes this work.

If you're a programmer who wants to learn how to use PHP to build Web-based applications, start here. Begin with the most basic PHP script, end up working with databases and streaming from the file system. In this part, we look at the basics of building a PHP script, including syntax, HTML forms, and database connections.

In Part 2, documents are uploaded by users and stored in a non-Web-accessible location for retrieval by the application in Part 3. We also look at working with XML files using DOM and SAX, and we look at exceptions.

In Part 3, learn about using HTTP authentication, streaming files, and how to create objects and exceptions.