I know that to display comments in the blog frontend just add <fb:comments-count href=<?php echo get_permalink(); ?>></fb:comments-count> anywhere in the theme.
However, I need to display the comment count within the Posts list in Wordpress Admin , preferably without plugins, via functions.php . Better yet if you can combine the standard comment counts from Wordpress and Facebook.
I already "googlei" in English and Portuguese trying to find a way to do this, but I did not find it. If anyone knows and can help I thank. Thanks!