$arr1 ["han"]["weight"] = 60
$arr1 ["han"]["height"] = 170
$arr1 ["seo"]["weight"] = 70
$arr1 ["seo"]["height"] = 180

$arr2 ["han"]["weight"] = 60
$arr2 ["han"]["height"] = 170
$arr2 ["seo"]["weight"] = 70
$arr2 ["seo"]["height"] = 180