$view_data:
Array
(
    [page] => Array
        (
            [meta_title] => Okells Garden Centre
        )

    [title] => Login
    [message] => 
    [identity] => Array
        (
            [name] => identity
            [id] => identity
            [class] => identity
            [type] => text
            [value] => 
            [placeholder] => Email address
            [autocapitalize] => off
            [autocomplete] => on
            [autocorrect] => off
        )

    [password] => Array
        (
            [name] => password
            [id] => password
            [class] => password
            [type] => password
            [value] => 
            [placeholder] => Password
            [autocapitalize] => off
            [autocomplete] => on
            [autocorrect] => off
        )

    [tpl_inner] => auth/login_checkout
)

$this->session->userdata():
Array
(
    [__ci_last_regenerate] => 1527195645
)

$this->session->flashdata():
Array
(
    [previous_url] => 
    [current_url] => https://www.okellsgardencentre.co.uk/login
    [return_url] => 
)