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get_comment_author( int|WP_Comment $comment_ID )

Retrieves the author of the current comment.

Description

If the comment has an empty comment_author field, then ‘Anonymous’ person is assumed.

Parameters

$comment_ID

(int|WP_Comment) (Optional) WP_Comment or the ID of the comment for which to retrieve the author. Default current comment.

Return

(string) The comment author

Source

File: wp-includes/comment-template.php

function get_comment_author( $comment_ID = 0 ) {
	$comment = get_comment( $comment_ID );

	if ( empty( $comment->comment_author ) ) {
		$user = $comment->user_id ? get_userdata( $comment->user_id ) : false;
		if ( $user ) {
			$author = $user->display_name;
		} else {
			$author = __( 'Anonymous' );
		}
	} else {
		$author = $comment->comment_author;
	}

	/**
	 * Filters the returned comment author name.
	 *
	 * @since 1.5.0
	 * @since 4.1.0 The `$comment_ID` and `$comment` parameters were added.
	 *
	 * @param string     $author     The comment author's username.
	 * @param int        $comment_ID The comment ID.
	 * @param WP_Comment $comment    The comment object.
	 */
	return apply_filters( 'get_comment_author', $author, $comment->comment_ID, $comment );
}

Changelog

Version Description
4.4.0 Added the ability for $comment_ID to also accept a WP_Comment object.
1.5.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/get_comment_author