Kéo dài thời gian đăng nhập trong wordpress

Array
(
[PHPSESSID] => 4oqj6d6fmjn3e4k4h9o2peg7s3
[path] => wordpress_8bcaf7c55080a17ee3f073d5ffc5ebe6=
[expires] => Fri, 26-Oct-2012 04:05:15 GMT
[secure] =>
[httponly,_wordpress_sec_8bcaf7c55080a17ee3f073d5ffc5ebe6] => admin|1383969915|fd723391f77145cabe1dab4259a33f27
[httponly,_wordpress_logged_in_8bcaf7c55080a17ee3f073d5ffc5ebe6] => admin|1383969915|1c3d9793af8b197481168e6ec02a79c5
[httponly] =>
)

$expiration = $expire = time() + 1209600;

function change_wp_cookie_logout( $expirein ) {
return 15552000; // 6 months in seconds
}
add_filter( 'auth_cookie_expiration', 'change_wp_cookie_logout' );