! 2차원 연관 배열의 초기화 $arr1 ["han"] ["weight"] ; 60
$arr1 ["han"] ["weight"] ; 170
$arr1 ["han"] ["weight"] ; 70
$arr1 ["han"] ["weight"] ; 180

$arr2 ["han"] ["weight"] ; 60
$arr2 ["han"] ["height"] ; 170
$arr2 ["seo"] ["weight"] ; 60
$arr2 ["seo"] ["height"] ; 170