public static function warnUser($userId, $reason, $type)
 {
     $userId = Database::makeStringSafe($userId);
     $reason = Database::makeStringSafe($reason);
     $type = Database::makeStringSafe($type);
     $datetype = Database::CurrentMySQLDateTime();
     Database::doQuery("INSERT INTO " . Database::addPrefix(WarningDao::table_name) . " SET user_id = '" . $userId . "', reason = '" . $reason . "', type = '" . $type . "'," . " time = '" . $datetype . "'");
     return WarningDao::getWarningByID(mysql_insert_id());
 }