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By Kris Hadlock

Ajax has taken the Web to a new level by offering an intuitive interactive model that rivals the desktop. To compete with desktop applications, database interaction is necessary to unleash the true power of an Ajax Web application.

In this article you'll learn how to create database-enabled Ajax requests using PHP and MySQL. We begin by creating the front-end HTML and JavaScript files used to make requests to the server-side. The requested server-side is a PHP file which bridges the gap between Ajax and a PHP object that connects to a MySQL database and returns results as an XML response to the Ajax engine. To cover this functionality you'll learn about the concepts from a high level overview rather than focusing on each and every line of code. The complete source code for this sample can be downloaded and is necessary to create a working sample on your personal server. Let's get started by taking a look at the front-end.

The Front-end

The front-end of this project consists of an HTML file and two JavaScript objects. The HTML includes the JavaScript and represents user postings. The user postings could represent anything, such as to-do lists, notes and so on.

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