T5 Change Comment Notification IP Lookup URL

t5-comment-notification-ip.php

<?php # -*- coding: utf-8 -*-
/**
 * Plugin Name: T5 Change Comment Notification IP Lookup URL
 * Description: Replaces the link for the IP lookup.
 * Plugin URI:  http://toscho.de/?p=2216
 * Version:     2012.08.30
 * Author:      Thomas Scholz
 * Author URI:  http://toscho.de
 * License:     MIT
 * License URI: http://www.opensource.org/licenses/mit-license.php
 */

add_filter( 'comment_notification_text', 't5_comment_notification_ip_url' );
add_filter( 'comment_moderation_text', 't5_comment_notification_ip_url' );

/**
 * Replace URL to IP address lookup.
 *
 * @param  string $text
 * @return string
 */
function t5_comment_notification_ip_url( $text )
{
	return str_replace(
		'http://whois.arin.net/rest/ip/',
		'http://ip.toscho.de/?ip=',
		$text
	);
}