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I am trying to find a function, plugin, query - something that will separate the parent comment count from the reply count.

Does anyone know how to achieve this?

10 comments total are broken into 3 parent comments and 7 replies. How can I display this at the top of the comment form?

Please & thank you!

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up vote 3 down vote accepted

here's a quick and dirty method...

in functions php, we create a callback function for wp_list_comments() which will count our comments:

$GLOBALS['parent_comments_count'] = 0;
$GLOBALS['child_comments_count'] = 0;

function count_comments( $comment, $args, $depth ) {
    $GLOBALS['comment'] = $comment;

then, in our template where it calls wp_list_comments(), we add another with a callback to our count function, then immediately after we can echo our count. then we have the regular wp_list_comments(), which will actually output the comments:

wp_list_comments( array( 'callback' => 'count_comments' ) );
echo "parents: ". $GLOBALS['parent_comments_count'];
echo "children: ". $GLOBALS['child_comments_count'];

emphasis on 'dirty', I'm sure there's a cleaner way to do this.

Here's another method which uses an additional query. This will get numbers regardless of pagination. We use the comment_count variable in $post to subtract number of parents from to get number of children.

In functions.php:

function c_parent_comment_counter($id){
    global $wpdb;
    $query = "SELECT COUNT(comment_post_id) AS count FROM $wpdb->comments WHERE `comment_approved` = 1 AND `comment_post_ID` = $id AND `comment_parent` = 0";
    $parents = $wpdb->get_row($query);
    return $parents->count;

In the template:

$number_of_parents = c_parent_comment_counter($post->ID);
$number_of_children = $post->comment_count - $number_of_parents;

echo "parents: ".$number_of_parents;
echo "children: ".$number_of_children;

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That is perfect, thank you so much! I am paginating comments over 100, and it appears to count them separately per page, any way to do a total count regardless of pagination? – Leanne May 5 '11 at 16:34
I've edited the answer with another method that should work with paginated comments. It uses an additional SQL query to count just parent comments. – Milo May 5 '11 at 17:34
OH my gosh, Milo. You have no idea how grateful I am. THANK you thank you thank you. I posted over in the WP forums but no reply there - are you a moderator? Can I link from there to here for others, or copy/paste your fix? – Leanne May 5 '11 at 19:18

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