(PHP 3>= 3.0.10, PHP 4 >= 4.0.0)

posix_getpgid -- Get process group id for job control


int posix_getpgid (int pid)

Returns the process group identifier of the process pid.

This is not a POSIX function, but is common on BSD and System V systems. If your system does not support this function at system level, this PHP function will always return FALSE.