如何从另一个保存值的数组中删除键？

Question

let's suppos we have the following two arrays

Let's suppose this is called $array1

Array
(
    [0] => Array
        (
            [Name] => Jack
            [Height] => 190
            [Shoe Size] => 40
        )

    [1] => Array
        (
            [Name] => Rose
            [Height] => 160
            [Shoe Size] => 52
        )

)

Suppose this is called $array2

Array
(
    [0] => Name
    [1] => Shoe Size
)

Now, what I need to do, is to keep the keys in $array1 which are found in $array2 as values, so the output I'm expecting is something like this

Array
(
    [0] => Array
        (
            [Name] => Jack
            [Shoe Size] => 40
        )

    [1] => Array
        (
            [Name] => Rose
            [Shoe Size] => 52
        )

)

I tried array_intersect and array_intersect_key but they're both failing. does anyone have any idea how to do this?

Answer 1

What you need is array_intersect_key with array_flip

$array3 = array_flip($array2);
foreach($array1 as &$a) {
   $a = array_intersect_key($a, $array3);
}