How can I change "127.0.0.1:8000" to my desired url. (laravel)

I'm using laravel and I don't know how to customize the default url which is "127.0.0.1:8000" or "localhost:8000" to my desired url.

My expectation is to change 127.0.0.1:8000 to sample.dev when I do php artisan serve

Do I really need to move my projects to htdocs or www?

Please help...

via Chebli Mohamed