I am an expierienced Yii and PHP developer, i usually spend my time helping others on freenode, but to support the Yii community i also answer them here, as 90% of the searches make you end up here.
Q&A for professional and enthusiast programmers
Q&A for professional system and network administrators
Q&A for professional programmers interested in conceptual questions about software development
Q&A for computer enthusiasts and power users
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Q&A for pro webmasters
Q&A for speakers of other languages learning English
Stack Exchange Network staging zone, where users come together to build new Q&A sites