public static function existsById($id)
 {
     if (strlen(Utils::checkInput($id, "Gameserver ID", 0, 31, INPUT_TYPE_NUMERIC)) == 0) {
         return Database::rowExistsByField("gameserver", "id", $id);
     } else {
         return false;
     }
 }
 public static function existsById($id)
 {
     return Database::rowExistsByField("templates", "id", $id);
 }
 public static function existsById($id)
 {
     return Database::rowExistsByField("physicalserver", "id", $id);
 }