PHP Resource Index, The - categorized listing of hundreds of PHP related resources on the Internet, divided into categories.
http://php.resourceindex.com/

PX: PHP Code Exchange -
http://px.sklar.com/

PHP Hub - news, newsgroups, tutorials, and forums from the PHP community.
http://www.phphub.com/

Free-PHP.net - free PHP scripts along with support forums.
http://www.free-php.net./