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I know to display comments on the blog front 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 Wordpress Admin Posts listing, preferably without plugins, via functions.php. Even better if you can match the standard Wordpress and Facebook comment counts.
Already "googlei" in English and Portuguese trying to find a way to do this, but I did not. If anyone knows and can help I appreciate. Thanks!
You have the reference/documentation of this
<fb:comments-count>? This works without any plugin?– brasofilo