I just want to start a program written in go, to do this, you need to set the values of the GOPATH and GOROOT variables with the export command. But how to do it through the system in PHP? As I understand it is a variable from the bash environment, and I just call the command of the operating system. I tried the system ("bash export GOROOT = mypatch"), and "sh export GOROOT = mypatch", there is no result.