In my DB I have a column 'own_product' that contains 2 values ( quantity and name)

In my Edit form I want to check if the first field (quantity) is string and positive or not.

I added a new column 'type-prod' (int , string)

this is my controller :

$request = $this->container->get('request');
    if ($request->getMethod() == 'POST')
    {

    $formel = $request->query->get('edit_formal'); 


    $type_value = $formel['own_product'];


      //case int
      $type_int= $this ->getDoctrine()
                ->getEntityManager()
                ->getRepository('DHG\WelcomeBundle\Entity\type-prod')
                ->findOneBy(array('type' => 'int'));

      //case string 
      $type_string = $this ->getDoctrine()
                ->getEntityManager()
                ->getRepository('DHG\WelcomeBundle\Entity\type-prod')
                ->findOneBy(array('type' => 'string'));

      if (isset($type_value) && $type_int && $type_value > 0 && is_int($type_value))

      {
        echo 'Success';

      }
else echo 'error' ;


        }

Thank you !