unsetting problem.

If you create an array like so:
$array[0] = "hi";
$array[3] = "hello";

then unset it like so:
unset($array);
or like so:
$array = array();
or like so:
$array = null;

And then do this:
$array[1] = "new";
$array[2] = "info";

The Array looks like this:
$array[0] = ""
$array[1] = "new"
$array[2] = "info"
$array[3] = ""

Is there away to destroy all keys too? So that the new array is just:
$array[1] = "new"
$array[2] = "info"

Why is it that whenever I finally break down and ask for help about something I end up figuring it out myself?

I was doing it like this:

$array = array(......array junk....);

function some_function()
{
global $array;
unset($array);
}

And in that fasion it was still keeping all the keys.

However, if you do it like this, it works:

$GLOBALS["array"] = array (....);

function some_function()
{
unset($GLOBALS["array"]);
}

It works correctly.