Gdn::get PHP Method

    public static function get($Key, $Default = null)
    {
        $Response = Gdn::userMetaModel()->getUserMeta(0, $Key, $Default);
        if (sizeof($Response) == 1) {
            return val($Key, $Response, $Default);
        }
        return $Default;
    }

 protected function getBirthdays()
 {
     $birthdays = json_decode(Gdn::get('BirthdayModule.Birthdays'));
     $token = date('y-m-d/H');
     if ($birthdays && $birthdays[0] == $token) {
         return $birthdays[1];
     }
     $date = new DateTime();
     if ($guestTimeZone = C('Garden.GuestTimeZone')) {
         try {
             $timeZone = new DateTimeZone($guestTimeZone);
             $offset = $timeZone->getOffset(new DateTime('now', new DateTimeZone('UTC')));
             $offset = -floor($offset / 3600);
             $date->modify("{$offset} hours");
         } catch (Exception $e) {
         }
     }
     $birthdays = Gdn::sql()->select('UserID')->from('User')->where("DATE_FORMAT(DateOfBirth, '%m-%d')", $date->format("'m-d'"), false, false)->get()->resultArray();
     $birthdays = array_column($birthdays, 'UserID');
     Gdn::set('BirthdayModule.Birthdays', json_encode([$token, $birthdays]));
     return $birthdays;
 }