I don't think people replicate it because having an environment that is based on directly mapping to the filesystem tree is completely inane for modern webapps.

I don't think people replicate it because having an environment that is based on directly mapping to the filesystem tree is completely inane for modern webapps. Most decent PHP software now hands the request off to a single file (eg index.php) that handles the routing. Yes, PHP has mass appeal for people that are happy to limit themselves to the lowest common denominator, however people that want to reach even a tiny bit further can discover other languages that have better ways of doing things. For instance, his "Hello world" example is completely fucking inane, and just spitting out a thing like that will lead to poor app design and unmaintainable spaghetti code.