Web Service betweet two machines run on local

I'm working an a Web/Mobile Application. Desktop is made with Laravel 5.1 and Oracle 11g express Edition. Mobile is made on Android.

I'm using two computers, both of them are on local (Android and PHP).

All works fine on the desktop application.

Now it's time to connect my Android App to the database, to do so, i have to implement a Web Service.

How can i get the URL of the web service and use it on the other machine for android?

How can i test my webservice ?

Thank you :)