Flat data

Array
(
    [110] => Array
        (
            [id] => 110
            [parent_id] =>
            [title] => Scisco
        )

    [91] => Array
        (
            [id] => 91
            [parent_id] => 110
            [title] => Dolor Ratis Usitas Virtus
        )

    [64] => Array
        (
            [id] => 64
            [parent_id] => 65
            [title] => Neque Sino Venio
        )

    [63] => Array
        (
            [id] => 63
            [parent_id] => 64
            [title] => Pecus Tamen Torqueo Typicus
        )

    [62] => Array
        (
            [id] => 62
            [parent_id] => 64
            [title] => Antehabeo Causa Vero
        )

    [66] => Array
        (
            [id] => 66
            [parent_id] => 110
            [title] => Inhibeo
        )

    [65] => Array
        (
            [id] => 65
            [parent_id] => 106
            [title] => Camur Nunc Tego Uxor
        )

    [106] => Array
        (
            [id] => 106
            [parent_id] => 110
            [title] => Mauris
        )

    [85] => Array
        (
            [id] => 85
            [parent_id] => 106
            [title] => Consectetuer Haero
        )

    [70] => Array
        (
            [id] => 70
            [parent_id] => 85
            [title] => Duis Jus Letalis Scisco
        )

    [67] => Array
        (
            [id] => 67
            [parent_id] => 68
            [title] => Diam Meus Nunc
        )

    [77] => Array
        (
            [id] => 77
            [parent_id] => 85
            [title] => Ea Valetudo
        )

    [69] => Array
        (
            [id] => 69
            [parent_id] => 77
            [title] => Ut
        )

    [68] => Array
        (
            [id] => 68
            [parent_id] => 69
            [title] => Erat Fere Tation
        )

)