$username = $security->makeSafe($_POST['username']);
 $email = $security->makeSafe($_POST['email']);
 $password = $security->makeSafe($_POST['password']);
 if (empty($username) || empty($email) || empty($password)) {
     $response['status'] = '403';
     $response['message'] = 'Name, email and password cannot be blank.';
     echo json_encode($response);
     return;
 }
 if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
     $response['status'] = '403';
     $response['message'] = 'Invalid email address';
     echo json_encode($response);
     return;
 }
 if (dbClass::getEmailFromUsers($email)) {
     $response['status'] = '403';
     $response['message'] = 'This user already has a password.';
     echo json_encode($response);
     return;
 }
 $password = $security->hashPwd($password);
 if (dbClass::saveUser($username, $email, $password)) {
     $response['status'] = '200';
     $response['message'] = 'New user created: ' . $username . '.';
 } else {
     $response['status'] = '500';
     $response['message'] = 'Could not save user.';
 }
 echo json_encode($response);
 return;