MediaWiki:Headersfooters-global-header
<?php $url = "http" . ((!empty($_SERVER['HTTPS'])) ? "s" : "") . "://".$_SERVER['SERVER_NAME'].$_SERVER['REQUEST_URI']; ?>
<script type="text/javascript" src="https://apis.google.com/js/plusone.js"></script>
<g:plusone></g:plusone>