Liste von Benutzern einer zusätzlichen Gruppe zuordnen

<?php

require 'global.php';

use wcf\data\user\UserAction;
use wcf\data\user\UserProfile;
use wcf\util\StringUtil;

// define usernames and the target group's id
$usernames = <<<PLAIN
Hans
Berta
PLAIN;
$groupID = null;

//
// AB HIER NICHTS ÄNDERN!
// DO NOT CHANGE CODE BELOW THIS LINE!
//

// unify given usernames and convert to an array
$usernames = StringUtil::unifyNewlines($usernames);
$usernames = explode("\n", $usernames);

// read user ids
$userIDs = [];
foreach ($usernames as $username) {
    $user = UserProfile::getUserByUsername($username);
    $userIDs[] = $user->getObjectID();
}

// assign group to users
if (!empty($userIDs) && $groupID) {
    (new UserAction($userIDs, 'addToGroups', [
        'deleteOldGroups' => false,
        'addDefaultGroups' => false,
        'groups' => [$groupID]
    ]))->executeAction();
}

// delete this file
unlink(__FILE__);

<?php

require 'global.php';

use wcf\data\user\UserAction;
use wcf\data\user\UserList;
use wcf\util\StringUtil;

// define usernames and the target group's id
$usernames = <<<PLAIN
Hans
Berta
PLAIN;
$groupID = null;

//
// AB HIER NICHTS ÄNDERN!
// DO NOT CHANGE CODE BELOW THIS LINE!
//

// unify given usernames and convert to an array
$usernames = StringUtil::unifyNewlines($usernames);
$usernames = explode("\n", $usernames);

// read user ids
$userIDs = [];
if (!empty($usernames)) {
    $userList = new UserList();
    $userList->getConditionBuilder()->add('user_table.username IN (?)', [$usernames]);
    $userList->readObjectIDs();
    $userIDs = $userList->getObjectIDs();
}

// assign group to users
if (!empty($userIDs) && $groupID) {
    (new UserAction($userIDs, 'addToGroups', [
        'deleteOldGroups' => false,
        'addDefaultGroups' => false,
        'groups' => [$groupID]
    ]))->executeAction();
}

// delete this file
unlink(__FILE__);