How to organize joint development (in the classroom)?

Question

PHP

Hello! There was a necessity to train the person PHP. Remotely. How it is possible to organize check of its code?
It would be ideal to get a code editor where he will write something, and I will see in real time what he writes (and I can make changes).

Answer 1

teamview/skype for realtime and git for review and editing.

Answer 2

Writing an interface just for learning php is tough)
skype is the best way out