This is a very good code example for putting info before and after the_content:
function wpdev_before_after($content) { $beforecontent = 'This goes before the content. Isn\'t that awesome!'; $aftercontent = 'And this will come after, so that you can remind them of something, like following you on Facebook for instance.'; $fullcontent = $beforecontent . $content . $aftercontent; return $fullcontent; } add_filter('the_content', 'wpdev_before_after');
Code was taken from here.