Руководство по PHP
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# posix_getpgid

(PHP 3 >= 3.0.10, PHP 4, PHP 5)

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`.

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posix_getlogin | Уровень выше | posix_getpgrp