Lumen env bootstrapping

env.php

<?php

/*
|--------------------------------------------------------------------------
| Detect The Application Environment
|--------------------------------------------------------------------------
|
| Loads environment variables from the first available `env` file in accordance
| with the current `APP_ENV` mode specified in the environment variables before
| the server starts.
|
*/

$appEnv = getenv('APP_ENV') ?: '';

$envFiles = [];

if ($appEnv) {
  array_push($envFiles, ".env.{$appEnv}.local");
  array_push($envFiles, ".env.{$appEnv}");
  array_push($envFiles, ".env");
} else {
  array_push($envFiles, ".env.local");
  array_push($envFiles, ".env");
}

foreach ($envFiles as $envFile) {
  $envPath = dirname(__DIR__) . "/{$envFile}";

  if (file_exists($envPath)) {
    (new Laravel\Lumen\Bootstrap\LoadEnvironmentVariables(
      dirname(__DIR__),
      $envFile
    ))->bootstrap();

    break;
  }
}