posix_getgrgid

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.

例子 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 )

注: 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.

add a note User Contributed Notes

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:


<pre>


$_["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


</pre>

add a note