The Official PHP Web Site

http://www.php.net/

This is perhaps the most useful of the sites listed in this appendix, simply because this is the site that contains up-to-date versions of not only the official documentation, but also the latest releases of PHP, including the PHP source and PHP binaries. If that is not enough, this site also contains an up-to-date listing of the major sites that use PHP, and a listing of all the books written on PHP. Not only does this site contain a plethora of resources, it also contains links to the other PHP sites, the latest news about all things PHP, and links to projects using PHP (such as Phorum and PHPLIB).