if (env('APP_ENV') laravel code example
Example: what is app_env in laravel
Laravel 5 uses .env file to configure your app. .env should not be committed on your repository, like github or bitbucket. On your local environment your .env will look like the following:
# .env
APP_ENV=local
For your production server, you might have the following config:
# .env
APP_ENV=production