posix_initgroups

(PHP 5 >= 5.2.0)

posix_initgroupsCalculate the group access list

Description

bool posix_initgroups ( string $name , int $base_group_id )

Calculates the group access list for the user specified in name.

Parameters

name

The user to calculate the list for.

base_group_id

Typically the group number from the password file.

Return Values

Returns TRUE on success or FALSE on failure.

See Also

  • The Unix manual page for initgroups(3).

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victor dot kupiyanov at gmail dot com
2 years ago
The function does not calculate groups, it sets groups access list of the current process in accordance to user information in /etc/groups.

Quote from Unix manual page for initgroups:

NAME
       initgroups - initialize the supplementary group access list
...
DESCRIPTION
       The  initgroups()  function  initializes  the  group  access  list  by  reading the
       group database /etc/group and using all groups of which user is a member.
       The additional  group  group  is  also added to the list.
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