In the latest version of WordPress, if I added the following code to include a custom field to my functions.php file...

function add_comment_fields($fields) {
    $fields['source'] = '<p class="comment-form-source ast-col-xs-12 ast-col-sm-12 ast-col-md-4 ast-col-lg-4"><label for="source" class="screen-reader-text">' . __( 'Related Publishing Source' ) . '</label>' .
        '<input id="source" name="source" type="text" value="" placeholder="Publishing Source" size="30" aria-required="true" /></p>';
    return $fields;

...how do I "display the results" of this custom field onto the comments page for each comment posted?

I was looking at the get_comments function, with an example like so....

$args = array(
    'user_id' => 1, // use user_id
$comments = get_comments( $args );
foreach ( $comments as $comment ) :
    echo $comment->comment_author . '<br />' . $comment->comment_content;

But that relates to the OOTB comments provided my wordpress. How can we display our new custom fields in this same fashion?

I found this article from 2011 on what I am trying to achieve. WordPress has changed dramatically sense then. Is there a 2020 version of that article for WordPress 5+ ...?

Many thanks!

  • did you look into get_comment_meta() - developer.wordpress.org/reference/functions/get_comment_meta
    – Q Studio
    Jan 12, 2021 at 20:56
  • Did you debug the return value from the function? to a log for example?
    – Q Studio
    Jan 12, 2021 at 21:04
  • That sounds cool, but I have very little experience with using that. I placed ?><pre><?php var_dump( $fields['source'] ); ?></pre><?php at the bottom of my functions.php file, but the output on my browser window says its null.
    – klewis
    Jan 12, 2021 at 21:11
  • Can you try: echo get_comment_meta( $comment->comment_ID, 'source', true );
    – Q Studio
    Jan 12, 2021 at 21:15
  • Can you check phpmyadmin and look in the comment_meta table for comment meta data matching the comment ID with "source" value?
    – Q Studio
    Jan 12, 2021 at 21:37

1 Answer 1


Just in case others are stumped with trying to learn how to reveal submitted comments onto a comments page (or any page for this matter), a good starting point to investigate is using the WordPress function wp_list_comments()

There are examples provided on that resource page to get things going in a healthy direction.

I would also include the following debug tactic as a help along the way...

?><pre><?php var_dump( $variable_to_test ); ?></pre><?php

...as mentioned by Q Studio. Thanks for that!


Another good resource to help extend the OOTB comment fields with more fields by WPengineer.com. I've tested it out for myself in 2020, and concepts still work.

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