Cordova remote click to call app

I want to make an app for Android using Cordova which listens to an input from another machine (a click of a button on a php page on a laptop which sends a phone number to the app and auto dials it). The dialing part I figured it out. I am searching the web for a solution for the other problem and I got to the conclusion that I should use web servers. But I have no idea how. Can you give me some directions? Thanks,