$arr1[0] = "john:::10";
$arr1[1] = "bill:::9";
$arr1[2] = "mary:::35";
$arr1[3] = "willy:::21";

##</code><code>##

$arr2[0] = 10;
$arr2[1] = 9;
$arr2[2] = 35;
$arr2[3] = 21;

##</code><code>##

$arr1[0] = "bill:::9";
$arr1[1] = "john:::10";
$arr1[2] = "willy:::21";
$arr1[3] = "mary:::35";