$errName = 'Bitte gib einen Benutzernamen ein.';
 } else {
     // Checken, ob der Name schon vergeben ist
     $name = str_replace(array('<', "\n", '>'), '', $name);
     $stmt = $database->prepare('SELECT count(*) FROM users WHERE name = ?');
     $stmt->execute(array($name));
     if ($stmt->fetchColumn() > 0) {
         $errName = 'Dieser Benutzername ist bereits vergeben.';
     }
 }
 if (empty($pass)) {
     $errPass = '******';
 }
 // LDAP Server gegenchecken
 $is_ldap_account = false;
 if ($ldap_server && !$errPass && !$errName && ldap_check_if_name_exists($name)) {
     if (!ldap_authenticate($name, $pass)) {
         $errName = 'Dieser Benutzername ist bereits im LDAP vergeben';
         $errPass = '******';
     } else {
         $is_ldap_account = true;
     }
 }
 if ($errPass == $errName && $errName == "") {
     // Benutzer erstellen
     $user = user();
     $user->name = $name;
     if ($is_ldap_account) {
         $user->flags = USER_FLAG_IS_LDAP_ACCOUNT;
     } else {
         $salt = base_convert(rand(0, 36 * 36 - 1), 10, 36);
/*
	Cleanup script: Remove accounts which no longer exist in LDAP

	This script should be placed outside the htdocs directory and run as a
	cron-job. It checks for each LDAP user if a LDAP account still exists
	and deletes an account if it does not.
*/
chdir('htdocs');
// change this to fit your directory structure
require 'system.php';
restore_exception_handler();
$not_found = array();
$users = $database->query('SELECT id, name FROM users WHERE id > 1 AND (flags & ' . USER_FLAG_IS_LDAP_ACCOUNT . ') != 0 ORDER BY id ASC');
foreach ($users as $user) {
    printf("%20s: ", $user['name']);
    $exists = ldap_check_if_name_exists($user['name']);
    if ($exists) {
        echo " found in ldap\n";
        continue;
    }
    echo " not found\n";
    $not_found[] = $user['id'];
}
if ($not_found) {
    $ids = implode(', ', $not_found);
    echo "Deleting users:\n";
    foreach (array('BEGIN TRANSACTION', 'DELETE FROM user_data WHERE user_id IN (' . $ids . ')', 'DELETE FROM user_feeds WHERE user_id IN (' . $ids . ')', 'DELETE FROM users WHERE id IN (' . $ids . ')', 'COMMIT') as $query) {
        echo $query . "\n";
        if ($database->exec($query) === FALSE) {
            die("\nSQL statement failed to execute.");
        }