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I have modified a widget to display the total number of Facebook comments on a post rather than the total wordpress comments. I can get that part to show correctly, but I would like to get the most popular posts based on how many Facebook comments there are as I have disabled wordpress comments and am only using the Facebook comments plugin v2.3.

This is the code I have searched and modified from various web posts but I know I'm missing something. I have also added a field in the database by duplicating the comment_count field and renaming it facebook_comments_count.

Currently I have this code in functions.php, but I doubt I'm putting it in the correct location.

add_action('template_redirect', 'updateFBCommentsCount', 1, 1);

function updateFBCommentsCount($post_id) {
    $url = get_permalink($post_id);

    $query = "https://graph.facebook.com/".$url."?fields=comments";
    $responseText = file_get_contents($query);
    $responseJson = json_decode($responseText);

    $commentCount = $responseJson->comments;
    update_post_meta($post_id, 'facebook_comments_count', $commentCount);
}

If I could get some direction with this that would be great. I'm not new with php, but new with the backend of wordpress.

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  • What is the graph request returning?
    – TheGentleman
    Apr 13, 2015 at 20:06
  • You might want to save a timestamp and only check so often - if you keep hammering the API on every request you'll soon end up getting blocked/temporarily suspended (depending on the traffic to your site).
    – TheDeadMedic
    Apr 13, 2015 at 20:36
  • The graph request returns an integer of the number of comments.
    – eliwedel
    Apr 14, 2015 at 1:53
  • How do I include a timestamp in this code? Again, I know some php but I don't really know the wordpress backend.
    – eliwedel
    Apr 14, 2015 at 1:54
  • @eliwedel You can edit this plug-in [Top Shared Posts on Facebook][1] to retrieve data for comment_count rather than total_count which uses by default. [1]: wordpress.org/plugins/top-shared-posts-on-facebook
    – Ismail
    May 4, 2015 at 2:01

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