Web Application Development with PHP 4.0

Source Layout

Before we start discussing code issues, you should familiarize yourself with the source tree to be able to quickly navigate through PHP's files. This is a must-have ability to implement and debug extensions.

After extracting the PHP archive, you'll see a directory layout similar to that in Figure 9.2.

Figure 9.2. Main directory layout of the PHP source tree.

Prerequisites Prior to working through the rest of this chapter, you should retrieve clean, unmodified source trees of your favorite Web server. We're working with Apache (available at http://www.apache.org) and, of course, with PHP (available at http://www.php.net—does ...