posix_getpgid

(PHP 4, PHP 5, PHP 7)

posix_getpgid — Get process group id for job control

说明

posix_getpgid ( int $pid ) : int

Returns the process group identifier of the process pid 或者在失败时返回 FALSE.

参数

pid

The process id.

返回值

Returns the identifier, as an integer.

范例

Example #1 Example use of posix_getpgid()

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

注释

Note:

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)

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