Yes hiphop compiler was very fast when they started but shortly after normal php was faster than the hiphop compiler. So the hiphop compiler transformed into hh

Yes hiphop compiler was very fast when they started but shortly after normal php was faster than the hiphop compiler. So the hiphop compiler transformed into hhvm which was php with some really nice additions. But at some point the language inventions got more and more in conflict with the increments in the php language so they dropped php support and its now only using its own language which is a very improved version of php