Adding like values in an array.

[leeparts]

I need to add a specific value of items in my array that have the same itemid. If a customer adds two of the same item to the array I want to change the quantity of the item to 2 and list it in the array once instead of having the same item in the array twice. I tried doing some stuff with array_search, but with no luck. Any help is greatly appreciate.

Thank You

Here is what I have for variable:

if ($_REQUEST["thisitemid"]!="") {
	$key=md5(time());
	$cartitems[$key]["itemid"]=$_REQUEST["thisitemid"];
	$cartitems[$key]["inv_amount"]=$_REQUEST["inv_amount"];
	$cartitems[$key]["key"]=$key;
$cartitems[$key]["qty"]=$_REQUEST["qty"];
	$_SESSION["cartitems"]=$cartitems;

}

$items=$_SESSION["cartitems"];

foreach ($items as $thisitem) {
	$key=$thisitem["key"];
	$itemid=$thisitem["itemid"];
	$inv_amount=$thisitem["inv_amount"];

}

[dagon]

i would drop $key and use the itemid as the key, then you wouldn't have the issue of searching a multi-dimensional array.

you would see if the item is already in cart with array_key_exists()