I saw his original presentation in Prague - Euruko 2008. Nice to see that he completed the project. Congrats dude, it's a huge project to take on. Will you be pushing the code on github?
The source code is available on my website: http://www.majda.cz/download/translating-ruby-to-php-cd.tar..... I didn't push it on GitHub because I didn't indend to develop the compiler further after finishing the thesis.
The code is BSD-licensed however, so if anyone wants to hack on it, he is free to go :-)