Array
(
    [0] => 4
    [1] => Hallo
    [2] => 2.39
    [3] => 
    [4] => Array
        (
            [0] => a
            [1] => 3
        )

    [5] => 1
    [6] => 
    [7] => 3
)

Parameter 1 moet een array zijn !
- integer: 4
- string: Hallo
- float: 2.39, 3.00
- ! isset: null
- array: [a, 3]
- bool: 1, 0


Controle:
Array
(
    [integer] => Array
        (
            [0] => 4
        )

    [string] => Array
        (
            [0] => Hallo
        )

    [float] => Array
        (
            [0] => 2.39
            [1] => 3.00
        )

    [! isset] => Array
        (
            [0] => null
        )

    [array] => Array
        (
            [0] => [a, 3]
        )

    [bool] => Array
        (
            [0] => 1
            [1] => 0
        )

)