PHP Interest Group
An ICQ group geared towards people who use PHP so they can be sure to always have someone they can turn to for help.

Zend Forums
A discussion area for questions and discussion of issues in PHP.

DevShed Forums
A forum for developers of many different technologies including PHP, SQL, ASP, Perl, and Java.

PHP Forum
Forum for php and mysql developers.

PHP Developer's Network Forums
A discussion board for PHP featuring a category for inexperienced programmers.

PHP World Bulletin Board
Exclusively for PHP questions.

PHP Builder Support Forum
Very active forum with categories for PHP and database questions.

Webmasters Resources Forums
Support for everything related to using PHP.

PHP Forums
PHP and MySQL forums, also covering other web languages such as Perl JavaScript and HTML. Free help and expert advice, online tutorials.

PHP Discussion Forums
Several forums dedicated to PHP language discussion.

Siteowners: PHP / mySQL
Discuss with other web developers issues related to PHP programming.

TurtleTips Forums: PHP
PHP and MySQL forum.

PHPDiscuss.com
Forum devoted strictly to discussing development with PHP.

PHPNULL Forums
Several forums dedicated to PHP including for newsbies, professionals, about template engines, PHP/databases problems.

PHP Chat
Online community of PHP developers.

phpBB Support forums
A comprehensive directory of templates and related downloads for the phpBB message forum software. Also PHP Advice.

Code Comments PHP Forums
Forums and newsgroups for many PHP related topics, including PHP installation, announcements, documentation, pear, XML and PHP programming.

PHP Forum at Tek-Tips
PHP technical support forums and mutual help system for computer professionals. Selling and recruiting forbidden.

php-Geeks
Contains downloads, support and freelancer work.

WeberDev Forum
Where a wide range of web development questions with an emphasis on PHP and MySQL meet their answers.

Information Technology and Webmaster Resource
Guides, tutorials and support from a large community of users.

Lowter Studios
An interactive web design community featuring free layouts, articles, tutorials, scripts, and more.

Malfitano
Forum focused at PHP programming with Flash/SQL using topics.

PHPZEN
PHP help and webmaster discussion forum.

PHP Community Forums
Discussion on PHP and related databases like MySQL, MS SQL. PHP Hosting, installation, PHP 5, PHP Addons are also the topics for discussion