php - How to get the value of a key from the .env file?

Solution:

See https://github.com/symfony/dotenv / https://symfony.com/doc/4.1/components/dotenv.html, which parses into $_ENV, and PHP has a getenv function which you use to get the value out of.

use Symfony\Component\Dotenv\Dotenv;

$dotenv = new Dotenv();
$dotenv->load(__DIR__.'/.env');

$appEnv = getenv('APP_ENV');
// you can also use ``$_ENV`` or ``$_SERVER``

Solution:

You can use the Dotenv() class as the documentation describe here you can call the APP_ENV like this

use Symfony\Component\Dotenv\Dotenv;

$dotenv = new Dotenv();
$dotenv->load('..\.env');
$appEnv= $_ENV['APP_ENV'];