Array
(
    [_GET] => Array
        (
        )

    [_POST] => Array
        (
        )

    [_COOKIE] => Array
        (
        )

    [_FILES] => Array
        (
        )

    [data] => Array
        (
            [a1a2] => de letter a
            [a3a4] => de letter b
        )

)