Using WordPress ‘get_comment_link’ PHP filter

by

The get_comment_link WordPress PHP filter allows you to modify the permalink of a single comment.

Usage

add_filter('get_comment_link', 'your_custom_function', 10, 4);
function your_custom_function($link, $comment, $args, $cpage) {
  // your custom code here
  return $link;
}

Parameters

  • $link (string) – The comment permalink with ‘#comment-$id’ appended.
  • $comment (WP_Comment) – The current comment object.
  • $args (array) – An array of arguments to override the defaults.
  • $cpage (int) – The calculated ‘cpage’ value.

More information

See WordPress Developer Resources: get_comment_link

Examples

Add a custom query parameter “my_var” with the value “123” to the comment link.

add_filter('get_comment_link', 'add_custom_query_parameter', 10, 4);
function add_custom_query_parameter($link, $comment, $args, $cpage) {
  $link = add_query_arg('my_var', '123', $link);
  return $link;
}

Remove the ‘#comment-$id’ part from the comment link.

add_filter('get_comment_link', 'remove_comment_id_hash', 10, 4);
function remove_comment_id_hash($link, $comment, $args, $cpage) {
  $link = strtok($link, '#');
  return $link;
}

Add a custom class “my-custom-class” to the comment link.

add_filter('get_comment_link', 'add_custom_class_to_comment_link', 10, 4);
function add_custom_class_to_comment_link($link, $comment, $args, $cpage) {
  $link = preg_replace('/(<a\b[^><]*)>/i', '$1 class="my-custom-class">', $link);
  return $link;
}

Change the comment link to point to a custom URL based on the comment ID.

add_filter('get_comment_link', 'change_comment_link_to_custom_url', 10, 4);
function change_comment_link_to_custom_url($link, $comment, $args, $cpage) {
  $custom_url = 'https://example.com/comment-' . $comment->comment_ID;
  return $custom_url;
}

Append the comment timestamp to the comment link as a query parameter.

add_filter('get_comment_link', 'add_timestamp_to_comment_link', 10, 4);
function add_timestamp_to_comment_link($link, $comment, $args, $cpage) {
  $timestamp = strtotime($comment->comment_date);
  $link = add_query_arg('timestamp', $timestamp, $link);
  return $link;
}