Convert Steam64ID to NS2ID

profall

Does anyone know the best way to convert from a Steam64ID to NS2ID? I understand how to do it with the standard Steam ID, however if you can convert it from a Steam64ID it would be very useful for a script I am writing.

ShamelessCookie

Here it is in PHP: http://pastebin.com/MyHQRA77

Here it is in nodejs (using int): http://pastebin.com/ckaBDTN0

Frozen

wat

Yojimbo

I thought the answer the meaning of life was 42!?