TCP peer to peer

[Luke100000]

It not recommended at all to use php server. But it would basically be TCP communication through http

uh... for a real-time game PHP is a terrible choice for a server language. A PHP server doesn't run continously and with standard HTTP there are no "PUSH" messages, clients always have to ask for updates.
PHP can't store a state over multiple requests and clients (properly) so you need a database to keep track of player positions etc.

So it only works for strategy games, where you have a town and you can attack other players.... games like that.
That's why I want to use NoobHub, my server will be running soon. maybe it will work.