T5 One Year Cookie

t5-one-year-cookie.php

<?php # -*- coding: utf-8 -*-
/**
 * Plugin Name: T5 One Year Cookie
 * Plugin URI:  http://toscho.de/?p=2207
 * Description: Set cookie expiration time to one year.
 * Version:     2012.08.28
 * Author:      Thomas Scholz
 * Author URI:  http://toscho.de
 * License:     MIT
 * License URI: http://www.opensource.org/licenses/mit-license.php
 */
add_filter( 'auth_cookie_expiration', 't5_one_year_cookie' );

function t5_one_year_cookie()
{	// one year in seconds
	return 31556926;
}