posix_getgrgid

(PHP 4, PHP 5)

posix_getgrgid — Return info about a group by group id

Descripción

array posix_getgrgid ( int $gid )

Gets information about a group provided its id.

Parámetros

gid: The group id.

Valores devueltos

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.

Historial de cambios

Versión	Descripción
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.

Ejemplos

Example #1 Example use of posix_getgrgid()


<?php

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

print_r($groupinfo);
?>

El resultado del ejemplo sería algo similar a:

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

Ver también

posix_getegid() - Return the effective group ID of the current process
posix_getgrnam() - Return info about a group by name
filegroup() - Obtiene el grupo de un archivo
stat() - Da información acerca de un archivo
safe_mode_gid
POSIX man page GETGRNAM(3)

posix_getgrnam

posix_getgid

Last updated: Fri, 20 May 2011

add a note User Contributed Notes posix_getgrgid

cweiske at php dot net 10-May-2009 02:50


When posix_getgrgid() fails (e.g. an invalid/unknown group id), it returns false.

This is except for Mac OSX on which you get an array with name "nogroup" and gid of "-1".

james at jfc dot org dot uk 16-Apr-2003 06:21


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 01:27


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 02:10


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

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