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# posix_getgrgid

(PHP 3 >= 3.0.13, PHP 4, PHP 5)

posix_getgrgid -- Return info about a group by group id

## Description

array posix_getgrgid ( int gid )

Returns an array of information about a group and `FALSE` on failure. If gid isn't a number then `NULL` is returned and an `E_WARNING` level error is generated.

Example 1. Example use of posix_getgrgid()
`<?php $groupid = posix_getegid(); $groupinfo = posix_getgrgid($groupid); print_r($groupinfo); ?>`
An example output:
    Array
    (
        [name]    => toons
        [passwd]  => x
        [members] => Array
            (
                [0] => tom
                [1] => jerry
            )
        [gid]     => 42
    )

> Note: As of PHP 4.2.0, members is returned as an array of member usernames in the group. Before this time it was simply an integer (the number of members in the group) and the member names were returned with numerical indices.

See also posix_getegid(), filegroup(), stat(), and safe_mode_gid.

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