Stop Save IP Address on WordPress Comment

stop-ip-comment-storing.php

<?php # -*- coding: utf-8 -*-
declare( strict_types = 1 ); 
/**
 * Plugin Name: Stop Save IP Adress on Comment
 * Plugin URI:  https://gist.github.com/bueltge/d0126eee91c0c17e80ad57e34e339a11
 * Description: Stop Storing IP Addresses with WordPress Comments.
 * Version:     2018-05-25
 * Author:      Frank Bültge
 * Author URI:  https://bueltge.de
 * License:     MIT
 * License URI: https://opensource.org/licenses/MIT
 */

namespace Bueltge\StopIpSaving;

defined( 'ABSPATH' ) || die();

add_filter( 'pre_comment_user_ip', '__return_empty_string' );