getGravatarId() public method

public getGravatarId ( ) : mixed
return mixed
 /**
  * @return \Phalcon\Http\ResponseInterface
  */
 public function accessTokenAction()
 {
     $oauth = new OAuth($this->config->github);
     $response = $oauth->accessToken();
     if (is_array($response)) {
         if (isset($response['error'])) {
             $this->flashSession->error('Github: ' . $response['error']);
             return $this->indexRedirect();
         }
         $githubUser = new GithubUsers($response['access_token']);
         if (!$githubUser->isValid()) {
             $this->flashSession->error('Invalid Github response. Please try again');
             return $this->indexRedirect();
         }
         /**
          * Edit/Create the user
          */
         $user = ForumUsers::findFirstByAccessToken($response['access_token']);
         if ($user == false) {
             $user = new ForumUsers();
             $user->token_type = $response['token_type'];
             $user->access_token = $response['access_token'];
         }
         if ($user->banned == 'Y') {
             $this->flashSession->error('You have been banned from the forum.');
             return $this->indexRedirect();
         }
         //$user = ForumUsers::findFirst();
         // Update session id
         session_regenerate_id(true);
         /**
          * Update the user information
          */
         $user->name = $githubUser->getName();
         $user->login = $githubUser->getLogin();
         $email = $githubUser->getEmail();
         if (is_string($email)) {
             $user->email = $email;
         } else {
             if (is_array($email)) {
                 if (isset($email['email'])) {
                     $user->email = $email['email'];
                 }
             }
         }
         $user->gravatar_id = $githubUser->getGravatarId();
         if (!$user->gravatar_id) {
             if ($user->email && strpos($user->email, '@') !== false) {
                 $user->gravatar_id = md5(strtolower($user->email));
             }
         }
         $user->increaseKarma(Karma::LOGIN);
         if (!$user->save()) {
             foreach ($user->getMessages() as $message) {
                 $this->flashSession->error((string) $message);
                 return $this->indexRedirect();
             }
         }
         /**
          * Store the user data in session
          */
         $this->session->set('identity', $user->id);
         $this->session->set('identity-name', $user->name);
         $this->session->set('identity-gravatar', $user->gravatar_id);
         $this->session->set('identity-timezone', $user->timezone);
         $this->session->set('identity-theme', $user->theme);
         $this->session->set('identity-moderator', $user->moderator);
         if ($user->getOperationMade() == Model::OP_CREATE) {
             $this->flashSession->success('Welcome ' . $user->name);
         } else {
             $this->flashSession->success('Welcome back ' . $user->name);
         }
         if ($user->email && strpos($user->email, '@') !== false) {
             if (strpos($user->email, '@users.noreply.github.com') !== false) {
                 $messageNotAlllow = 'Your current e-mail: ' . $this->escaper->escapeHtml($user->email) . ' does not allow us to send you e-mail notifications';
                 $this->flashSession->notice($messageNotAlllow);
             }
         } else {
             $messageCantSend = 'We weren\'t able to obtain your e-mail address' . ' from Github, we can\'t send you e-mail notifications';
             $this->flashSession->notice($messageCantSend);
         }
         if ($user->getOperationMade() != Model::OP_CREATE) {
             /**
              * Show a notification to users that have e-mail bounces
              */
             $parametersBounces = array('email = ?0 AND reported = "N"', 'bind' => array($user->email));
             $bounces = NotificationsBounces::find($parametersBounces);
             if (count($bounces)) {
                 foreach ($bounces as $bounce) {
                     $bounce->reported = 'Y';
                     $bounce->save();
                 }
                 $messageFailid = 'We have failed to deliver you some email notifications,' . ' this might be caused by an invalid email associated to your Github account or ' . 'its mail server is rejecting our emails. Your current e-mail is: ' . $this->escaper->escapeHtml($user->email);
                 $this->flashSession->notice($messageFailid);
                 $parametersBouncesMax = array('email = ?0 AND created_at >= ?1', 'bind' => array($user->email, time() - 86400 * 7));
                 $bounces = NotificationsBounces::find($parametersBouncesMax);
                 if (count($bounces) >= NotificationsBounces::MAX_BOUNCES) {
                     $messageRepeat = 'Due to a repeated number of email bounces we have disabled email ' . 'notifications for your email. You can re-enable them in your settings';
                     $this->flashSession->notice($messageRepeat);
                     $user->notifications = 'N';
                     $user->save();
                 }
             }
             /**
              * Show a notification to users that haven't spend their votes
              */
             if ($user->votes >= 10 && mt_rand(1, 5) == 3) {
                 $this->flashSession->notice('You have ' . $user->votes . ' votes remaining to spend. If you find something useful in this forum do not hesitate to give others some votes.');
             }
         }
         return $this->discussionsRedirect();
     }
     $this->flashSession->error('Invalid Github response. Please try again');
     return $this->discussionsRedirect();
 }