Longman\TelegramBot\DB::isDbConnected PHP Method

    public static function isDbConnected()
    {
        return self::$pdo !== null;
    }

 /**
  * Handle getUpdates method
  *
  * @param int|null $limit
  * @param int|null $timeout
  *
  * @return \Longman\TelegramBot\Entities\ServerResponse
  */
 public function handleGetUpdates($limit = null, $timeout = null)
 {
     if (!DB::isDbConnected()) {
         return new Entities\ServerResponse(['ok' => false, 'description' => 'getUpdates needs MySQL connection!'], $this->bot_name);
     }
     //DB Query
     $last_update = DB::selectTelegramUpdate(1);
     //As explained in the telegram bot api documentation
     $offset = isset($last_update[0]['id']) ? $last_update[0]['id'] + 1 : null;
     $response = Request::getUpdates(['offset' => $offset, 'limit' => $limit, 'timeout' => $timeout]);
     if ($response->isOk()) {
         //Process all updates
         foreach ((array) $response->getResult() as $result) {
             $this->processUpdate($result);
         }
     }
     return $response;
 }