Symfony 4, get .env parameter from a controller, is it possible and how?

Question

From symfony 4, I want create a global parameter and get the value of this parameter from a controller.

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?

Answer 1

For Symfony 5

in your .env file

APP_PARAM=paramvaluehere

in your config/services.yaml

parameters:
    app.paramname: '%env(APP_PARAM)%'

in your controller

$this->getParameter('app.paramname');

Answer 2

If someone is stil looking for a quick fix but not much symfonish,

define your parameter in .env

MY_PARAM='my param value'

and then in controller call it

echo $_ENV['MY_PARAM'];

if you call the varaible in the controller you better define it in the config/services.yaml under parameters section and access it through parameterBag is much symfonish way.