title: Symfony 4, get .env parameter from a controller, is it possible and how?
body: <p>From symfony 4, I want create a global parameter and get the value of this parameter from a controller. </p>
  
  <p>This parameter is the path of an another app in the server. So, I thinked add the paramerter in the .env file. But how can I get the value of this parameter from a controller?</p>