posix_getgrgid

(PHP 4, PHP 5)

posix_getgrgid — Return info about a group by group id

说明

array posix_getgrgid ( int $gid )

Gets information about a group provided its id.

参数

gid: The group id.

返回值

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 `gid` 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.

更新日志

版本	说明
4.2.0	Prior to this version, members was simply an integer representing the number of members in the group, and the member names were returned with numerical indices.

范例

Example#1 Example use of posix_getgrgid()


<?php

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

print_r($groupinfo);
?>

上例的输出类似于：

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

参见

posix_getgrnam

posix_getgid

Last updated: Mon, 26 Nov 2007

add a note User Contributed Notes
posix_getgrgid

james at jfc dot org dot uk
17-Apr-2003 02:21


in php-4.3 the array returned seems to have changed.



it now returns:



["name"] group name

["passwd"] group password

["members"] group members (array of usernames)

["gid"] numeric group id

tech at dslip dot com dot au
13-May-2002 09:27


okies...



This code should be considered as an OPTION only, it works under MY set of circumstances, and that is all I intended. The below funtion will return the NAME of the GROUP if provided with the Group ID#



  function RC_posix_getgrgid($gid) 

    {

    $LocationGroup = "/etc/group"; //EDIT THIS IF YOU HAVE A DIFFERENT OS. mine = debian

    $fp = fopen ("/etc/group","r");

    while ($groupinfo = fscanf ($fp, "%[a-zA-Z0-9]:x:%[0-9]:%[a-zA-Z0-9]\n")) 

        {

        list ($name, $groupID, $nfi) = $groupinfo;

        if ($groupID == $gid)

            {

            $returnval = $name;

            }

        }

    fclose($fp);

    if($returnval) { return $returnval; } else { return 0; }

    }

rcgraves+php at brandeis dot edu
22-Feb-2000 10:10


Returns an array containing the elements of the group structure. The array has both numeric indices, each of which is a string naming one member of the group, and named string indices. The array elements are:





$_["name"]  string groupname (users)


$_["gid"] integer gidnumber (e.g. 0 for wheel/root)


$_["members"] int number of users in group


$_[0]..$_[n] string usernames in the group

add a note

posix_getgrnam

posix_getgid

Last updated: Mon, 26 Nov 2007