posix_getpgid

(PHP 4, PHP 5, PHP 7, PHP 8)

posix_getpgidGet process group id for job control

说明

posix_getpgid(int $process_id): int|false

Returns the process group identifier of the process process_id 或者在失败时返回 false.

参数

process_id

The process id.

返回值

Returns the identifier, as an int.

示例

示例 #1 Example use of posix_getpgid()

<?php
$pid
= posix_getppid();
echo
posix_getpgid($pid); //35
?>

注释

注意:

This is a not POSIX function, but is common on BSD and System V systems. If the system does not support this function, then it will not be included at compile time. This may be checked with function_exists().

参见

  • posix_getppid() - Return the parent process identifier
  • man page SETPGID(2)