PHP 7.0.6 Released

    posix_initgroups

    (PHP 5 >= 5.2.0, PHP 7)

    posix_initgroups — Calculate 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).

    User Contributed Notes

    victor dot kupiyanov at gmail dot com
    4 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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