Array intersect on key in array?

Question

I have an array that has countries:

array(
\'AF\'=>\'AFGHANISTAN\',
\'AL\'=>\'ALBANIA\',
\'DZ\'=>\'ALGERIA\',
\'AS\'=>\'AMERICAN SAMOA\',
);
         


        

Answer 1

$selection = array('AL', 'DZ');
$filtered = array_intersect_key($countries, array_flip($selection));
var_dump($filtered);