detect_environment.php

<?php
$env = $app->detectEnvironment(
        function()
        {
            if (isset($_SERVER['HTTP_HOST']))
            {
                switch ( $_SERVER['HTTP_HOST'] )
                {
                    case 'example.local':
                        $env = 'local';
                        break;
                    case 'staging.example.com':
                        $env = 'staging';
                        break;
                    case 'dev.example.com':
                        $env = 'dev';
                        break;
                    default:
                        $env = 'live';
                }
                return $env;
            }else{
                // Artisan Default Environment
                return 'local';
            }
        }
);