Title: Commenters per post Last modified: August 20, 2016 --- # Commenters per post * [carblanco](https://wordpress.org/support/users/carblanco/) * (@carblanco) * [15 years, 1 month ago](https://wordpress.org/support/topic/commenters-per-post/) * Hi all, * Is there any way to show / count how many users have left a comment in a post? I mean, unique users, not total number of comments. For instance, if I left 2 comments and you left 3 comments, I want to display that 2 users have commented. * Thanks. Viewing 15 replies - 1 through 15 (of 16 total) 1 [2](https://wordpress.org/support/topic/commenters-per-post/page/2/?output_format=md) [→](https://wordpress.org/support/topic/commenters-per-post/page/2/?output_format=md) * [Michael](https://wordpress.org/support/users/alchymyth/) * (@alchymyth) * [15 years, 1 month ago](https://wordpress.org/support/topic/commenters-per-post/#post-2136801) * possibly not the best example: * ``` ID); foreach( $comms as $comm ) { $comm_authors[] = $comm->comment_author; } $unique_comm_authors = array_unique($comm_authors); echo 'unique commenters: '.count($unique_comm_authors); ?> ``` * [http://codex.wordpress.org/Function_Reference/get_comments](http://codex.wordpress.org/Function_Reference/get_comments) * Thread Starter [carblanco](https://wordpress.org/support/users/carblanco/) * (@carblanco) * [15 years, 1 month ago](https://wordpress.org/support/topic/commenters-per-post/#post-2136802) * WOW, alchymyth, many thanks. * One more question… Now I want to count unique users who have participated in the post, I mean, unique commenters + 1 (post author). But what happen if the post author is also a commenter? * [Michael](https://wordpress.org/support/users/alchymyth/) * (@alchymyth) * [15 years, 1 month ago](https://wordpress.org/support/topic/commenters-per-post/#post-2136804) * i’ll do a comparison, if the comment author is not the post author: [http://codex.wordpress.org/Database_Description#Table:_wp_users](http://codex.wordpress.org/Database_Description#Table:_wp_users) * `if( $comm->user_id != $post->post_author )` * this new code will not count the post author as commenter: * ``` ID); foreach( $comms as $comm ) { if( $comm->user_id != $post->post_author ) $comm_authors[] = $comm->comment_author; } $unique_comm_authors = array_unique($comm_authors); echo 'unique commenters: '.count($unique_comm_authors); ?> ``` * Thread Starter [carblanco](https://wordpress.org/support/users/carblanco/) * (@carblanco) * [15 years, 1 month ago](https://wordpress.org/support/topic/commenters-per-post/#post-2136805) * Thanks again. * I think that you are not counting the post author always and if it’s also a commenter then don’t count. I mean: – initially the post users are the author + commenters– if the author is also a commenter -> don’t count * Thread Starter [carblanco](https://wordpress.org/support/users/carblanco/) * (@carblanco) * [15 years, 1 month ago](https://wordpress.org/support/topic/commenters-per-post/#post-2136809) * Also, if there aren’t comments I get a nice “Warning: array_unique() [function. array-unique]: The argument should be an array in” 😉 * [Michael](https://wordpress.org/support/users/alchymyth/) * (@alchymyth) * [15 years, 1 month ago](https://wordpress.org/support/topic/commenters-per-post/#post-2136812) * > you are not counting the post author always and if it’s also a commenter then > don’t count. * i am not counting the post author because of your request: ‘Now I want to count unique users who have participated in the post, I mean, unique commenters + 1( post author). But what happen if the post author is also a commenter?’ – if this is not what you meant, please clarify. * > – initially the post users are the author + commenters * the code is not outputting post users, but post commenters which are not the post author. i.e. the post author is never counted – neithre if he commented on his own post, nor if has not commented. * if you want to show the number 1 if nobody has commented so far, or the only commenter is the post author, the add 1 to the result of the code. * you can avoid the warning by adding a conditional statement * ``` ID); foreach( $comms as $comm ) { if( $comm->user_id != $post->post_author ) $comm_authors[] = $comm->comment_author; } if( $comm_authors$ ) : //avoid error warning if no comments unique_comm_authors = array_unique($comm_authors); endif; echo 'unique commenters: '.count($unique_comm_authors); ?> ``` * Thread Starter [carblanco](https://wordpress.org/support/users/carblanco/) * (@carblanco) * [15 years, 1 month ago](https://wordpress.org/support/topic/commenters-per-post/#post-2136814) * Understood, thanks. * Thread Starter [carblanco](https://wordpress.org/support/users/carblanco/) * (@carblanco) * [15 years, 1 month ago](https://wordpress.org/support/topic/commenters-per-post/#post-2136815) * The only think I can’t understand is why the code works in the single.php but not in the home.php, posts with 0 comments appear with 5-6 commenters. What am I not seeing here? * [Michael](https://wordpress.org/support/users/alchymyth/) * (@alchymyth) * [15 years, 1 month ago](https://wordpress.org/support/topic/commenters-per-post/#post-2136817) * my bad – i forgot to initialize the `$comm_authors` array: * ``` ID); $comm_authors = array(); /initialize empty array foreach( $comms as $comm ) { etc...... ?> ``` * Thread Starter [carblanco](https://wordpress.org/support/users/carblanco/) * (@carblanco) * [15 years, 1 month ago](https://wordpress.org/support/topic/commenters-per-post/#post-2136818) * Thanks. * Sorry for the confusion… what I need is counting how many users are joining a post. – If the post has 0 commentes, then we had 1 user (only the author) – If the post has 3 comments made by other users, then we had 3 + 1 users – If the post has 3 comments and 1 of them is made by the author, then we had 2 + 1 users * [Michael](https://wordpress.org/support/users/alchymyth/) * (@alchymyth) * [15 years, 1 month ago](https://wordpress.org/support/topic/commenters-per-post/#post-2136819) * that is what the code does – it counts external commenters – it does not count the post author, regardless if he has commented or not. (this assumes that the post author was logged in while commenting – only then will the `$comm->user_id` exist) * ``` ID); $comm_authors = array(); /initialize empty array foreach( $comms as $comm ) { if( $comm->user_id != $post->post_author ) $comm_authors[] = $comm->comment_author; } //conditional to avoid adding the post author if( $comm_authors$ ) : //avoid error warning if no comments unique_comm_authors = array_unique($comm_authors); endif; echo 'external commenters: '.count($unique_comm_authors); ?> ``` * Thread Starter [carblanco](https://wordpress.org/support/users/carblanco/) * (@carblanco) * [15 years, 1 month ago](https://wordpress.org/support/topic/commenters-per-post/#post-2136821) * Sorry for being a pain in the ass but: * 1. Something is not working properly in the home.php. In general is counting right but for some reason there is a post with 0 comments and 4 external commenters… * 2. I think that the code is not counting admin comments. Is it possible? If not, then always we have a -1 difference. * 3. Post with 0 comments are showing 0. * I mean: – If the post has 0 commentes, then we had 1 user (only the author) – If the post has 3 comments made by other users, then we had 3 + 1 users – If the post has 3 comments and 1 of them is made by the author, then we had 2 + 1 users * Thanks. * [Michael](https://wordpress.org/support/users/alchymyth/) * (@alchymyth) * [15 years, 1 month ago](https://wordpress.org/support/topic/commenters-per-post/#post-2136823) * 1) possibly a conflict with trashed comments, because is haven’t set this parameter in `get_comments()`: * > $status > (string) (optional) Only return comments with this status. ‘hold’ – > unapproved comments ‘approve’ – approved comments ‘spam’ – spam comments ‘trash’– > trash comments Default: None * change the one line: * ``` ID.'&status=approve'); ``` * 2. as said before, the code is **not **counting admin (if the post is by admin) comments. * 3. ‘Post with 0 comments are showing 0.’ – that is the result of 2) * i said before, if you want to count the post author, you need to add 1 to the result of the code. * Thread Starter [carblanco](https://wordpress.org/support/users/carblanco/) * (@carblanco) * [15 years, 1 month ago](https://wordpress.org/support/topic/commenters-per-post/#post-2136828) * 1) Same results… Using `ID.'&status =approve');` I get 4 external comments with 0 comments. Could we use ‘&status =approve&status!=trash&status!=spam&status!=hold’? * [Michael](https://wordpress.org/support/users/alchymyth/) * (@alchymyth) * [15 years, 1 month ago](https://wordpress.org/support/topic/commenters-per-post/#post-2136854) * afaik, negation `status!=spam` does not work. * another thought: the extra counts might be pings or trackbacks; * try and add: ‘type=comment’: * `ID.'&type=comment');` Viewing 15 replies - 1 through 15 (of 16 total) 1 [2](https://wordpress.org/support/topic/commenters-per-post/page/2/?output_format=md) [→](https://wordpress.org/support/topic/commenters-per-post/page/2/?output_format=md) The topic ‘Commenters per post’ is closed to new replies. * 16 replies * 2 participants * Last reply from: [carblanco](https://wordpress.org/support/users/carblanco/) * Last activity: [15 years, 1 month ago](https://wordpress.org/support/topic/commenters-per-post/page/2/#post-2137030) * Status: not resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics