title: Getting information from Pusher channel using PHP
body: <p>I'm getting new to "Pusher" (the websocket api) and I'm having hard time to understand how can I fetch information from the server after sending it to the channel.
  For example, this is my code:</p>
  
  <pre><code>&lt;?php
      include "pusher/Pusher.php";
  ?&gt;
  &lt;script src="http://js.pusher.com/2.1/pusher.min.js"&gt;&lt;/script&gt;
  &lt;script type="text/javascript"&gt;
      var pusher = new Pusher('c77c12b92e38f4156e9c');
      var channel = pusher.subscribe('test-channel');
      channel.bind('my-event', function(data) {
        alert('An event was triggered with message: ' + data.message);
      });
  &lt;/script&gt;
  &lt;?php
      $pusher = new Pusher($config["pusher_key"], $config["pusher_secret"], $config["pusher_id"]);
      $pusher-&gt;trigger(channel, 'my-event', array('message' =&gt; 'Test Message') );
  </code></pre>
  
  <p>Now, my information is sent to the server, but I don't know how to get it.</p>
  
  <p>Thanks.</p>