PHP Question: how to array_intersect_assoc() recursively

Question

Let\'s say I want to do this:

$a = array_intersect_assoc(
 array(
  \'key1\' => array(
   \'key2\' => \'value2\'
  ),
  \'key3\' => \'value3\',
  \'key4\' => \'va         


        

Answer 1

function array_key_match_recursive(array $main, array $other, $i = 0, &$result = []) {
    foreach($main as $key => $value) {
        $k = sprintf('%s%s', str_repeat('=', $i), $key);
        if (!isset($other[$key])) {
            $result[$k][] = 'not key';
        }
        if (!is_array($value) && empty($other[$key])) {
            $result[$k][] = 'value empty';
        }
        if (is_array($value) && isset($other[$key])) {
            array_key_match_recursive($value, $other[$key], ++$i, $result);
        }
    }

    //return (bool) !$result;
    return $result;
}