gistfile1.txt

            $data = [];
            $data['first_name'] = $this->params()->fromPost('first_name', '');
            $data['last_name']  = $this->params()->fromPost('last_name', '');

            $form = $this->getUserService()->getUserForm();
            $form->setHydrator(new \Zend\Stdlib\Hydrator\ClassMethods);
            $form->bind($user);
            $form->setData($data);
\Zend\Debug\Debug::dump($form->get('user_auth_email')->getValue());
\Zend\Debug\Debug::dump($form->getInputFilter()->getRawValues());
\Zend\Debug\Debug::dump($form->isValid());
\Zend\Debug\Debug::dump($form->getMessages()); exit;



string(29) "[email protected]"
array(3) {
  'first_name' =>
  NULL
  'last_name' =>
  NULL
  'user_auth_email' =>
  NULL
}
bool(false)
array(1) {
  'user_auth_email' =>
  array(1) {
    'isEmpty' =>
    string(36) "Value is required and can't be empty"
  }
}