Array
(
    [0] => Michel
    [1] => 35
    [2] => 9
    [3] => 5
    [4] => 32
    [5] => Sohier
)

Array
(
    [35] => Michel
    [9] => Manuel
    [5] => Anna
    [32] => Sohier
)

Array
(
    [Michel] => 135
    [Manuel] => 109
    [Anna] => 105
    [Sohier] => 132
)

Array
(
    [0] => Michel
    [1] => Sohier
)

NULL
int(35)

NULL
int(9)

NULL
int(5)

NULL
int(32)