I also wrote one for fun at http://cretz.github.io/pratphall http://cretz.github.io/pratphall, but I have come to the conclusion that cross compiling to PHP isn

I also wrote one for fun at http://cretz.github.io/pratphall http://cretz.github.io/pratphall, but I have come to the conclusion that cross compiling to PHP isn't practical. The whole point is that it's easy to write and see the results right away.