Array
(
    [0] => Array
        (
            [cat_name] => categorie1
            [cat_id] => 1
        )

    [1] => Array
        (
            [cat_name] => categorie2
            [cat_id] => 2
        )

)
Array
(
)
Array
(
    [0] => Array
        (
            [cat_name] => sous-categorie1
            [cat_id] => 3
        )

    [1] => Array
        (
            [cat_name] => souscategorie2
            [cat_id] => 4
        )

)
Parent: 0
Array
(
    [0] => Array
        (
            [cat_name] => sousouscategori1
            [cat_id] => 5
        )

)
Parent: 0
Array
(
)