if (empty($form_errors)) {
      $email = $_POST['email'];
      $username = $_POST['username'];
      $password = $_POST['password'];
      $invitationcode = $_POST['invitationcode'];

      $hashed_password = password_hash($password, PASSWORD_DEFAULT);

      try {
          $sqlInsert = "INSERT INTO users (username, email, password, invitationcode, joindate)
                    VALUES (:username, :email, :password, :invitationcode, now())";

          $statement = $db->prepare($sqlInsert);
          $statement->execute(array(':username'=> $username, ':email' => $email, ':password' => $hashed_password, ':invitationcode' => $invitationcode));

          if ($statement->rowCount() == 1) {
              $result = "Registration successful!";
          }
      } catch (PDOException $error) {
          $result = "Registration failed: ".$error->getMessage()."";
      }
  } else {
      if (count($form_errors) == 1) {
          $result = "There was 1 error in the form!";

          foreach ($form_errors as $errorForm) {
              $result .= $errorForm;
          }
      } else {
          $result = "There were " .count($form_errors). "errors in the form";

          foreach ($form_errors as $errorForm) {
              $result .= $errorForm;
          }
      }
  }