Symfony\Component\HttpFoundation\Request::getRealMethod PHP Method

    public function getRealMethod()
    {
        return strtoupper($this->server->get('REQUEST_METHOD', 'GET'));
    }

 public function getRequestParameters()
 {
     if ($this->request->getRealMethod() === 'POST') {
         return $this->request->request->all();
     } else {
         return $this->request->query->all();
     }
 }