User

Just like normal Meta Boxes, you can add meta fields for users.

PHP

$usermeta = new Cuztom_User_Meta( $id, $title, $locations, $data )

$id
(string) The ID of the Meta (box). Used for technical stuff

$title
(string|array) The title of the Meta Box shown in the Wordpress backend. You can pass an array, the first element is the title, the second one is the box description.

$locations
(string|array) The location the Meta Box is shown. Can be (and defaults to): 'show_user_profile', 'edit_user_profile'

$data
(array) The fields (data) of the Meta Box