Automatic logout with Clef with Pusher

automatic_logout.php

<?php

// On the backend we have the Pusher object set up
$PUSHER_APP_ID = 'YOUR_APP_ID';
$PUSHER_APP_KEY = 'YOUR_APP_KEY';
$PUSHER_APP_SECRET = 'YOUR_APP_SECRET';

$pusher = new Pusher( $PUSHER_APP_KEY, $PUSHER_APP_SECRET, $PUSHER_APP_ID );

// then, when a user logs out via Clef, we trigger a logout message
// on their user ID push channel

$pusher->trigger($user->ID, 'logout', array(success => true));

<?php
// then, in the frontend, we set up Pusher to listen for that message
// and redirect the user when it's heard
if (isset($user->clef_id)) { ?>
<script src="//js.pusher.com/2.2/pusher.min.js"></script>
<script>

  var pusher = new Pusher("<?php echo $PUSHER_APP_ID ?>");
  var channel = pusher.subscribe("<?php echo $user->ID ?>");
  channel.bind('logout', function(data) { window.location.reload() });
</script>
<?php } ?>