Anyone have useful php socket examples?

[little_webspinner]

I am wondering if anyone has some useful PHP socket programming examples.  There are a lot of tutorials out there but I find a lot of them are not well written and often are only written from either the client or server's point of view.  I would really like to see a good example where two separate scripts are provided. 

 

1. A Server Side to put on the one computer.

2. A Client Side to put on another computer.

 

The best would be something super simple that  says/sends... "Hello other world!" and the other side receives it, prints it to a file.  This way people could clearly see the interaction and learn rather then geting half the story and trying to puzzle their way through things. Puzzling has is merits but now when you are a busy person.