Track logged in user with piwik

Piwik user tracking

<?php
$uname = '';
$user =& JFactory::getUser();

if ( is_object($user) ) {
    $uname = $user->name;
}
?>
<!-- Piwik -->
<script type="text/javascript">
  var _paq = _paq || [];
<?php if (!empty($uname)): ?>
  _paq.push(["setCustomVariable", 1, 'User', '<?php echo $uname; ?>', "visit"]); 
<?php endif ?>
  _paq.push(["trackPageView"]);
  _paq.push(["enableLinkTracking"]); 

  (function() {
    var u=(("https:" == document.location.protocol) ? "https" : "http") + "://enovate.us/";
    _paq.push(["setTrackerUrl", u+"piwik.php"]);
    _paq.push(["setSiteId", "2"]);
    var d=document, g=d.createElement("script"), s=d.getElementsByTagName("script")[0]; g.type="text/javascript";
    g.defer=true; g.async=true; g.src=u+"piwik.js"; s.parentNode.insertBefore(g,s);
  })();
</script>