When did PHX props become official in GMod?

Title

Uh, sort of strange seeing an OP with nothing in it.
I think PHX started shipping with GMod sometime in the end of 2010 or the start of 2011. I’ll see if I can get a proper date. And out of curiosity, is there a reason behind you needing to know this?

Just curious, mainly. I’m starting to pick up GMod again, and although I played it a bit after PHX went official, I just decided to ask now. (Also, a part of me just wanted to make sure it really was added officially, and that it’s not just that the PHX files are somewhere in my garrysmod folder and I can’t find them)

I wonder if I still have the addon folder of Phx3