Sort and shuffle an array

I want the scores to be ordered, and then randomized so the items aren't in the same place every time. Does that make sense?

Array
(
[0] => Array
    (
        [id_entreprise] => 171
        [title_entreprise] => chateaua
        [name_entreprise] => 
        [commune_entreprise] => Bordeaux
        [score] => 7
    )

[1] => Array
    (
        [id_entreprise] => 173
        [title_entreprise] => chateaub
        [name_entreprise] => Château B
        [commune_entreprise] => Saint-Emilion
        [score] => 10
    )

[2] => Array
    (
        [id_entreprise] => 178
        [title_entreprise] => chateauf
        [name_entreprise] => 
        [commune_entreprise] => 
        [score] => 12
    )

[3] => Array
    (
        [id_entreprise] => 176
        [title_entreprise] => chateaud
        [name_entreprise] => 
        [commune_entreprise] => 
        [score] => 7
    )
)

Code :

$scoreCol = array_column($chateaux, 'score');
array_multisort($scoreCol, SORT_DESC, $chateaux);

For some reason, whenever they're sorted by scores, they're also sorted alphabetically by id or title (i don't know)! I either need to know how to randomize the sorted array, while keeping the score in numerical order.