Been doing PHP for about five years now, and I'm still learning new things everyday. I contribute most frequently to Code Review, which is where I learn the most :) Ask me for help, but don't expect me to GIVE you answers or do everything for you. My reviews tend to be more text than code.
Q&A for peer programmer code reviews
Q&A for professional and enthusiast programmers
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Q&A for users and developers of hardware and software for Raspberry Pi
Q&A for professional and independent game developers
Q&A for apps, scripts, and development with the Stack Exchange API
Q&A for professional programmers interested in conceptual questions about software development