This is the brand-new Philadelphia area PHP Meetup group. I'm not sure where this will lead but getting local PHP developers together once in a while seems like a good thing.
I'm also open to widening the group to PHP/MySQL, or LAMP developers as well. Let me know your thoughts.
I'd also be open to other platforms apart from Meetup for this group but there seemed to be an already interested group here.
Anyway, join the group, leave a note on the message board, and maybe come out to a get-together!