add_action('wp_head', function(){ ?>
<script async src=”//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js”></script>
<script>
(adsbygoogle = window.adsbygoogle || []).push({
google_ad_client: “ca-pub-1000816455188133”,
enable_page_level_ads: true
});
</script>
<?php });