How to use named pipes in PHP between different functions or even different processes without fork?

Question

I want to write an Ajax web application, a game to be specific. Two web clients have to communicate with each other via the PHP server. My approach to solve this is to use A

Answer 1

Im not sure wether I understand your 2nd last post..

But to comment on the last one, if I don't misunderstand, TCP might be even more complex because you will have to establish a connection before you can either read or write, so youve got different overhead

As for the pipehandle closing at the function end, I assume you'll face the same problem with the sockets; but the pipefile remains!

Persistent storage (files,db) would make the clients independent timingwise, if you want to use blocking calls then files might actually be a way to go..