title: Ajax push system
body: <p>In my own system, I have a <code>PHP</code> page which displays all the goods I have sold through my online webshops, from the latest transaction to the first.</p>
  
  <p>I would like this page to automatically update, whenever people buy something from me.</p>
  
  <p>I could make <code>AJAX</code> call every <em>5</em> seconds to check the orders in my databases, but that seems 1980?
  or is it that way people do it?</p>
  
  <p>How can I go about <em>pushing</em> a notification to my <code>php</code> page whenever my php <em>newOrder()</em> function (lets call it that) is called?</p>