How to merge arrays without repeating by key?

Question

PHP

Hello. There are such arrays

Array
(
    [0] => 80
    [1] => 80
    [2] => 80
    [3] => 90
)
Array
(
    [0] => Array
        (
            [0] => 195
        )

    [1] => Array
        (
            [0] => 195
        )

    [2] => Array
        (
            [0] => 190
            [1] => 195
            [2] => 200
        )

    [3] => Array
        (
            [0] => 190
            [1] => 195
        )

)

How do you combine them to make it look like this?

[80] => Array
        (
            [0] => 190
            [1] => 195
            [2] => 200
        )
[90] => Array
        (
            [0] => 190
            [1] => 195
        )

Answer 1

array_combine