public function connect()
  {
    $this->dbServer = "localhost";
    $this->dbUsername = "testgebruiker";
    $this->dbPassword = "1234";
    $this->dbName = "userdeb";

    try
    {
    $connstring = "mysql:host=".$this->dbServer.";dbname=".$this->dbName."";
    $this->pdo = new PDO($connstring, $this->dbUsername, $this->dbPassword);
    $this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    }
    catch(PDOException $e)
    {
      echo "ConnectionFailed: " . $e->getMessage();
    }
  }