posix_getgrgid

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

posix_getgrgid — Return info about a group by group id

posix_getgrgid(int$group_id): array|false

Gets information about a group provided its id.

The array elements returned are:

**The group information array**
Element	Description
name	The name element contains the name of the group. This is a short, usually less than 16 character "handle" of the group, not the real, full name.
passwd	The passwd element contains the group's password in an encrypted format. Often, for example on a system employing "shadow" passwords, an asterisk is returned instead.
gid	Group ID, should be the same as the `group_id` parameter used when calling the function, and hence redundant.
members	This consists of an array of string's for all the members in the group.

The function returns false on failure.

示例 #1 Example use of posix_getgrgid()

<?php

$groupid = posix_getegid();
$groupinfo = posix_getgrgid($groupid);

print_r($groupinfo);
?>

以上示例的输出类似于：

Array ( [name] => toons [passwd] => x [members] => Array ( [0] => tom [1] => jerry ) [gid] => 42 )