Wordpress - Get all users who commented on a post - wordpress

Question

I need to get all users who commented on a post. And for each user the comments. Searched online but couldn't find any solution.

Answer 1

If post_id= 15 then
<?php
$comments = get_comments('post_id=15');
foreach($comments as $comment) :
echo($comment->comment_author .'--coment--'.$comment->comment_content);
echo '<br>';
endforeach;
?>
see this for further details https://codex.wordpress.org/Function_Reference/get_comments
.

Answer 2

You need get_comments().
Here is how you get all comments on a certain post:
<?php
$args = array(
'post_id' => 0, // Place post ID here.
);
get_comments( $args );
?>
After running this code, you will get an array of posts and user IDs, you can use the IDs with a foreach to get all comments for each user. Like this:
<?php
$args = array(
'user_id' => 0, // Place user ID here.
);
get_comments( $args );
?>

Answer 3

You can get comment writer from its comment id:
<?php $author = get_comment_author( $comment_ID ); ?>
You can generate short code use it, Here this will display all information of comment.You need to extract which one is required.
function input_func( $atts ) {
global $post;
$comments = get_comments( array( 'number' => 2, 'post_id' => get_the_ID() ) );
print_r( $comments);
}
add_shortcode( 'input', 'input_func' );

Answer 4

Code:
global $wpdb, $post;
// Query
$query = sprintf("SELECT comment_author_email
FROM {$wpdb->comments}
JOIN {$wpdb->posts} ON {$wpdb->posts}.ID = {$wpdb->comments}.comment_post_ID
WHERE comment_post_ID = %d AND comment_approved = '1'",
$post->ID);
$emailslist = $wpdb->get_col($query);
$emailslist = array_unique($emailslist);
// get all emails
print_r($emailslist);
Here you can get list of emails of users.
You can also use WP_Comment_Query