title: Angular with socket.io & backend php
body: <p>I am working on realtime app (chat) &amp; using angular and my backend is php(codeigniter restapi)
   for database in mongodb 
  I hear somewhere that <a href="http://www.socket.io" rel="nofollow">socket.io</a> is best library for socket (use for real time) , 
  and i see socket.io is mostly use with node.js , so may i need basic knowledge of node or any other feasible way to work with socket.io , angular and php</p>