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

Array
(
    [66.249.72.231] => Array
        (
            [time] => 1371616458
            [uri] => /portal/index.php/konten/detail/humas/pressrelease/10421/pengungkapan-kasus-pesta-sabu-yang-dilakukan-oleh-hakim-pn-bekasi
            [bot] => 
        )

    [157.55.32.164] => Array
        (
            [time] => 1371616356
            [uri] => /portal/index.php/suara_masyarakat/detail/7994
            [bot] => 
        )

    [182.9.208.124] => Array
        (
            [time] => 1371616366
            [uri] => /portal/
            [bot] => 
        )

    [112.215.36.162] => Array
        (
            [time] => 1371616410
            [uri] => /portal/index.php/konten/detail/humas/berita/10969/persatuan-wanita-kristen-indonesia-komitmen-dukung-rehabilitasi
            [bot] => 
        )

    [112.215.36.159] => Array
        (
            [time] => 1371616418
            [uri] => /portal/index.php/suara_masyarakat/detail/8755
            [bot] => 
        )

    [110.136.194.170] => Array
        (
            [time] => 1371616458
            [uri] => /portal/index.php/backsite/post/load_script/1/bgiframe-superfish-supersubs
            [bot] => 
        )

    [111.94.145.243] => Array
        (
            [time] => 1371616467
            [uri] => /portal/index.php/suara_masyarakat/detail/8559
            [bot] => 
        )

    [54.242.233.11] => Array
        (
            [time] => 1371616475
            [uri] => /portal/
            [bot] => 
        )

)