<?php
/**
* Plugin Name: Adsense after more-Tag
* Description: Add content of var $extra_more after more-Tag
* Version: 0.0.1
* Author: Frank Bültge
* Author URI: http://bueltge.de/
*/
! defined( 'ABSPATH' ) and exit;
add_filter( 'the_content_more_link', 'custom_more_link', 9999 );
function custom_more_link( $more_link ) {
$extra_more = 'Adsense script'; // here add your adsense code, between ''
return $more_link . $extra_more;
}