comment_notification_headers │ filter-hook │ WP 1.5.2

Filters the comment notification email headers.

Usage

add_filter( 'comment_notification_headers', 'wp_kama_comment_notification_headers_filter', 10, 2 );

/**
 * Function for `comment_notification_headers` filter-hook.
 * 
 * @param string $message_headers Headers for the comment notification email.
 * @param string $comment_id      Comment ID as a numeric string.
 *
 * @return string
 */
function wp_kama_comment_notification_headers_filter( $message_headers, $comment_id ){

	// filter...
	return $message_headers;
}

$message_headers(string)

Headers for the comment notification email.

$comment_id(string)

Comment ID as a numeric string.

Changelog

Where the hook is called

$message_headers = apply_filters( 'comment_notification_headers', $message_headers, $comment->comment_ID );

Where the hook is used in WordPress