Frank Kromann is a PHP expert, web developer and PHP book author.
Jon Stephens is an itinerant American technical writer, reviewer and site developer. He has co-written more than five books on web development, including Usable Forms for the Web and Constructing Usable Web Menus.
Nathan A. Good lives in the Twin Cities area of Minnesota. He is a contractor with Alliance of Computer Professionals in Bloomington. When he isn't writing software, Nathan enjoys building PCs and servers, reading about and working with new technologies, and trying to get all his friends to make the move to open source software. When he's not at a computer (which he admits is not often), he spends time with his family, at his church, and at the movies.
Lee Babin is a programmer based in Calgary, Alberta, Canada, where he serves as the chief programmer for an innovative development firm duly named The Code Shoppe. He has been developing complex web driven applications since his graduation from DeVry University in early 2002 and has since worked on over 50 custom websites and online applications. Lee is married to a beautiful woman by the name of Dianne, who supports him in his rather full yet rewarding work schedule. He enjoys video games, working out, martial arts, and traveling, and can usually be found working online on one of his many fun web projects at any given time. While Lee has experience in a multitude of web programming languages, his preference has always been PHP. With the release of PHP 5, many of his wishes have been fulfilled.