session variable
$this->session->userdata('email') =>
$this->session->userdata('group') =>
$this->session->userdata('id') =>
$this->session->userdata('user_id') =>

Array
(
    [38.111.147.83] => Array
        (
            [time] => 1328376590
            [uri] => /portal/index.php/konten/detail/deputi-rehabilitasi/artikel/3060/proses_pemulihan
            [bot] => 
        )

    [67.195.111.167] => Array
        (
            [time] => 1328376487
            [uri] => /portal/index.php/konten/detail/upt-diklat/profil/7999/tupoksi-upt-diklat
            [bot] => 
        )

    [112.215.66.60] => Array
        (
            [time] => 1328376579
            [uri] => /portal/index.php/backsite/post/load_script/1/bgiframe-superfish-supersubs
            [bot] => 
        )

    [120.162.5.60] => Array
        (
            [time] => 1328376582
            [uri] => /portal/index.php/bootstrap/load_script/1/player-playlist-bgiframe-superfish-supersubs-uitools_scrollable-newsticker
            [bot] => 
        )

    [38.107.179.208] => Array
        (
            [time] => 1328376605
            [uri] => /portal/
            [bot] => 
        )

)