On the ThinkPHP blog they mention the upcoming International PHP Conference happening October 27th through 31st and the Early Bird pricing for it that ends September 30th.

IPC 2008 is ahead of us and everyone is preparing for the Conf. Expect the best and biggest IPC ever, with five days fully packed of sessions, workshops and special days like the Starter Day or the Enterprise Day (covering topics from Tools over QA up to PHP5 migration and Security).

The special pricing is about 200 Euro for normal admission, 150 Euro for freelancers and 100 Euro for the student rate. The schedule has already been posted so check it out and be sure to reserve your spot in this year's event.