Websocket Html5 and Php?

Question

interest of knowledge has arisen here to make applications in real time.

I saw here several articles but this giving "pal" in the url that step in js

This is how I’m passing:

var socket = new WebSocket('ws://localhost:8000');

Shampooing.

But I’m not an expert on Websocket, I wonder if someone can help me from scratch with some post that teaches well or around here explaining step by step. I really wanted to know how to use, I thank you in advance.