在多维数组中获取值，以创建一个由PHP中的键和值组成的全新值

I have this kind of array :

<?php

$arr = [    0 => [ ... ],

            1 => [  0 => 'one',
                    1 => 'two',
                    2 => 'three',
                    ...
                ],

            2 => [ ... ],

            3 => [  0 => 'guy',
                    1 => 'brush',
                    2 => 'threepwood',
                    ...
                ]
        ];

What could be the most reduced line of code to get :

$newArr = [
    'one' => 'guy',
    'two' => 'brush',
    'three' => 'threepwood',
    ...
];

?

$arr[1] and $arr[3] has the same number of elements of course.

if $arr[0] and $arr[2] do not matter, then just iterate and place the first set's value as the second set's key as such:

foreach($arr[1] as $k => $v){
    $newArr[$v] = $arr[3][$k];
}

print_r($newArr);

or something like this:

$newArr = array_combine($arr[1], $arr[3]);