Array
(
    [0] => Acme\Employee Object
        (
            [id:Acme\Employee:private] => 1
            [name] => superman
            [salary:protected] => 1.27
            [age:Acme\Employee:private] => 80
        )

    [1] => Acme\Employee Object
        (
            [id:Acme\Employee:private] => 2
            [name] => batman
            [salary:protected] => 1
            [age:Acme\Employee:private] => 73
        )

    [2] => Acme\Employee Object
        (
            [id:Acme\Employee:private] => 3
            [name] => spiderman
            [salary:protected] => 0.82
            [age:Acme\Employee:private] => 50
        )

)
employee: id=1 name=superman salary=1.27 age=80

employee: id=2 name=batman salary=1 age=73

employee: id=3 name=spiderman salary=0.82 age=50

Array
(
    [0] => 1.27
    [1] => 1
    [2] => 0.82
)
Array
(
    [0] => 1.27
    [1] => 1
    [2] => 0.82
)
Array
(
    [0] => 1.27
    [1] => 1
    [2] => 0.82
)
mean salary = 1.03
Salaire moyen : 1.03