PHP is a server-side, HTML-embedded scripting language. ItOs frequently being used to replace the functionality created by Perl to write CGI scripts). Similar to both HTML and CGI, PHP is faster to program in and faster to execute than CGI. PHP was written specifically for Web site creation, unlike Perl, C, or Java. Companies such as Honda, Patagonia, and Zoom.com all have Web sites utilizing PHP. PHP Advanced for the World Wide Web: Visual QuickPro Guide consists of approximately fifteen chapters of step-by-step content, aimed at teaching specific topics in direct, focused segments. The scripts featured in this book are based on features and capabilities that current PHP users most frequently inquire about (e.g. sessions, authentication, and object-oriented programming). as well as detailing those technologies that will be more important in the future, such as XML and Wireless Access Protocols.