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comment_author( int|WP_Comment $comment_ID )

Displays the author of the current comment.

Parameters

$comment_ID

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

More Information

If no name is provided (and “User must fill out name and email” is not enabled under Discussion Options), WordPress will assign “Anonymous” as comment author.

Source

File: wp-includes/comment-template.php

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

	/**
	 * Filters the comment author's name for display.
	 *
	 * @since 1.2.0
	 * @since 4.1.0 The `$comment_ID` parameter was added.
	 *
	 * @param string $author     The comment author's username.
	 * @param int    $comment_ID The comment ID.
	 */
	echo apply_filters( 'comment_author', $author, $comment->comment_ID );
}

Changelog

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

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