Two PHP web-based message boards exist at Zend, including one that focuses on general PHP questions of all flavors and one that is specific to the Zend Optimizer for PHP.
A web design forum for developers with many languages covered.
Weborum forums have several sections including a growing PHP tutorial section, several scripts, and a PHP questions and answers board.
A forum for PHP and serverside chat, with a large community and many PHP experts.
Talk about scripts, rate PHP scripts, get your script reviewed, post your offers and more.
Sitepoint is a community of webmasters willing to help anyone out with their coding problems or questions. The PHP section of their forum is particularly useful.
This site includes a forum specifically for PHP applications in web design as well as two dedicated to posting/acquiring jobs.
Talk about anything PHP related.
A PHP programmers community.
This board at PHP World is for discussions of all PHP related topics.
Currently includes forums in both Russian and English on the subject of PHP, including hosting, employment and general PHP.
A great place to have your PHP and MySQL related bugs/problems iron out.
Discussion board that covers mod_rewrite for PHP scripts issues.
A fairly active message board on all developer related PHP topics.
A community site offering support forums for PHP and SQL. | 
