How to take from the sample the user group with the maximum id in which the user is located?

Question

1C-Bitrix

Hello. CUser::GetUserGroupList($USER_ID); - returns a list of all groups the user is a member of, where $USER_ID is the user's id. It is necessary through variables to display the name of the user group in which the user is located, and if the user is in several groups, then the name of only one group is displayed, which is the highest of all by ID. How to do this?

Answer 1

What's the problem?
Let's assume that your

highest of all by ID

is the one with the maximum id, then for the user with $id = 1:

$obGroups = CUser::GetUserGroupList(1);

$maxGroupId = 0;
while ($arGroup = $obGroups->Fetch()) {
    if ($maxGroupId < $arGroup['GROUP_ID']) {
        $maxGroupId = $arGroup['GROUP_ID'];
    }
}
$obMaxGroup = CGroup::GetByID($maxGroupId);
if ($arMaxGroup = $obMaxGroup->Fetch()) {
    var_dump($arMaxGroup);
}