Para mostrar publicidad de Google

pub_google

function PUB_GOOGLE($google_ad_client,$google_ad_slot,$google_ad_width,$google_ad_height) 
{
?>
<script async type="text/javascript">
	google_ad_client = "<?php echo  $google_ad_client; ?>";
	google_ad_slot   = "<?php echo  $google_ad_slot; ?>";
	google_ad_width  =  <?php echo  $google_ad_width; ?>;
	google_ad_height =  <?php echo  $google_ad_height; ?>;
</script> 
<script  async  type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>
<?php
return;
}