Las Vegas GiveCamp is here again. PHP based groups won 2 out of 4 of the awards last year. 3 out of 4 if you count WordPress. It's a fantastic time to be had while helping your community in the geekiest of ways, hack-a-thon.
Sign up here: http://vegasgivecamp.org/technical-volunteer-sign-up-form/
About Las Vegas GiveCamp
GiveCamp is a weekend hack-a-thon that brings technology and marketing professionals together who donate their time and talents to build software solutions for local nonprofits from apps to databases and donor management tools to web sites. In 2013 Vegas GiveCamp selected 18 local charities and signed up 50 volunteers to help build a better community and help change lives! The estimated value of time and talent being donated exceeds $100,000, according to Vegas GiveCamp organizers Owen Carver and Steve Wainstead.