[gqvijay]

Being angry is fine but lashing out and saying "..you claim to be better than PHP dev when you don't care about.." serves no purpose other than reacting to your emotions...ESPECIALLY as a leader. If you said that publicly in front of others, that's even worst and you should seriously think about getting mentored by someone you trust. (regardless of how ridiculously clueless he is)

Being assertive is important but being an asshole just adds distance between you and your team. You gain respect on the former and loose respect on the latter. I agree with partisan: 1. Take a deep breath and run it by your "boss" to gain perspective 2. Apologize to your developer for the poor choice of words and tone and tell him that you regret, and it would never happen again. 3. Once that's done, ask: "But do help me understand what you did here and why."

If he repeats his mistakes, take the "I don't think we are a fit" or "this arrangement is probably not a match for us" or whatever. After that's done, you can go to your boss and vent some more. :)

Hope it helps.