posix_initgroups

    (PHP 5 >= 5.2.0, PHP 7, PHP 8)

    posix_initgroups — Calculate the group access list

    Description

    posix_initgroups(string $username, int $group_id): bool

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

    Parameters

    username

    The user to calculate the list for.

    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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    User Contributed Notes 1 note

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    victor dot kupiyanov at gmail dot com
    13 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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