PHP - replace values of array with another array

Question

Is there a way i can replace the values of one array with the values of another which has identical keys?

$arr1 = Array
        (
            [key1] => va         


        

Answer 1

If the keys in array 1 and 2 are identical:

$arr1 = $arr2;

If all keys of array 2 are guaranteed to be in array 1 (array 2 is a subset of array 1):

$arr1 = array_merge($arr1, $arr2);

If some keys of array 2 are not in array 1 and you want only the keys that are in array 1 to be replaced (array 2 is not a subset of array 1, and you only want to merge the intersecting part):

$arr1 = array_merge($arr1, array_intersect_key($arr2, $arr1));