posix_getpgid

(3.0.10 - 3.0.18 only, PHP 4 >= 4.0.0)

posix_getpgid -- Get process group id for job control

Description

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.