+1  A: 

Hello,

You must act as a client, just like you're sending notification. That must be something like:

<?php

 $certFile = 'apns-dev.pem';

 while(true){ 

      $ctx = stream_context_create(); 
      stream_context_set_option($ctx, 'ssl', 'local_cert', $certFile); 
      //stream_context_set_option($ctx, 'ssl', 'passphrase', $this->certPass);
      echo "try to open stream\n";
      $fp = stream_socket_client('ssl://feedback.sandbox.push.apple.com:2196', $err, $errstr, 5, STREAM_CLIENT_CONNECT, $ctx); 
      if (!$fp) { 
          print "Failed to connect". $err . $errstr. "\n"; 
          exit(); 
      }
      else
      {
        echo 'Connected to feedback sandbox...';
        while(($in = fread($fp, 1024)) != EOF)
        {
            echo 'read '. $in . "\n";   
        }

        socket_close($fp);

        fclose($fp);
      }
      sleep(2000);
 }

?>

xicoras