Filter an array by its keys with another array [duplicate]

Question

I have an array that looks like this:

Array
(
    [333824-00A-BLK-10] => Array
        (
            [classId] => 44
            [inv] => 0.000
            [onOrder] => 0
            [code] => 333824-00A-BLK-10
        )
    [333824-00A-BLK-10.5] => Array
        (
            [classId] => 44
            [inv] => 0.000
            [onOrder] => 0
            [code] => 333824-00A-BLK-10.5
        )
)

I want to use another array that looks like below to filter it with:

Array
(
    [0] => 333824-00A-BLK-10
    [1] => 333824-00A-BLK-10.5
    [2] => 333824-00A-BLK-11
    [3] => 333824-00A-BLK-11.5
    [4] => 333824-00A-BLK-12
)

I want to keep the results in the array and get rid of the keys that don't match. I have tried a function that filters the array with a foreach but no luck. Any help please? Thanks!

Answer 1

$result = array_intersect_key($data, array_flip($keys));

Where $data is your main array, and $keys is an array with keys to filter