http://www.zend.com Zend Technologies, owners of the Zend scripting engines at the heart of PHP 4 and 5.
http://www.phpbuilder.com Tutorial and news site.
http://codewalkers.com A site offering tutorials, code, reviews, and support forums for programming with PHP and MySQL.
http://php.resourceindex.com The PHP Resource Index. The main draw for this site is the thousands of ready-made PHP scripts, functions, and classes. You can also find links to other tutorials and the larger PHP community.
http://weberdev.com More code, tutorials, weblogs.
http://www.hotscripts.com Scripts for every webmaster's need, mostly in PHP, but also in Perl, Python, JavaScripts, and even some in C and C++. Updated constantly, this is a great place to look for something interesting.
http://phpdeveloper.org News and forums for all types of PHP coders.
http://www.thelinuxconsultancy.co.uk/phpeditors.php A filterable (by OS and license type) list of editors and IDEs that support PHP coding.
http://forums.devnetwork.net The PHP Developers Network web forums.
http://www.planet-php.net A collection of PHP-related weblogs.
http://www.viapanda.com/nvuphp.html A FAQ outlining problems with using PHP in the Nvu web-authoring application, with some workarounds.
http://phpnuke.org One of the original PHP-based content-management systems.
http://www.wordpress.org The WordPress personal publishing system.
http://www.phpbb.com phpBB, a popular PHP-based community forum system.
