function showads() {
return '<div id="adsense"><script type="text/javascript"><!�
google_ad_client = "pub-XXXXXXXXXXXXXX";
google_ad_slot = "4668915978";
google_ad_width = 468;
google_ad_height = 60;
//�>
</script>

<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script></div>';
}

add_shortcode('adsense', 'showads');

<!-- Im Beitrag folgenden Code einfuegen -->
[adsense]

http://www.wpbeginner.com/wp-tutorials/25-extremely-useful-tricks-for-the-wordpress-functions-file/

Code in functions.php einfügen

Adsense Shortcode aktivieren

wordpress

PHP