how can i minus the quantity when click delete

[rjusman90]

want to minus the quantity when click delete if cart qty is more then 1

//remove item from shopping cart
if(isset($_GET["removep"]) && isset($_GET["return_url"]) && isset($_SESSION["products"])){
    $product_code   = $_GET["removep"]; //get the product code to remove
    $product_s      = $_GET["removes"]; //get the product size to remove
    $return_url     = base64_decode($_GET["return_url"]); //get return url

    foreach ($_SESSION["products"] as $key=>$cart_itm){ //loop through session array var
        if($cart_itm["id"] !=$product_code || $cart_itm["size"] !=$product_s){ //item does,t exist in the list
          $product[] =array(

              'name'=>$cart_itm["name"],
              'id'=>$cart_itm["id"], 
              'size'=>$cart_itm["size"],
              'qty'=>$cart_itm["qty"],
              'price'=>$cart_itm["price"]);
            }
        //create a new product list for cart
         $_SESSION["products"] = $product;
    }
        //redirect back to original page
    header('Location:'.$return_url);
}

this code is deleting the product but i want minus also when qty is greater then 1

[minitauros]

Why don't you just select the product merely by the product code? Or isn't that unique?

E.g.

foreach($_SESSION['products'] as $key => $cart_item) {
    if($product_code == $_GET['product_code']) {
        //* This is the product of which we're reducing the quantity.

        // Substract one (or whatever you want) from the quantity.
        $cart_item['quantity'] -= 1;

        // Save the product in its session variable.
        $_SESSION['products'][$key] = $cart_item;
    }
}

[rjusman90]

its not working in my code

[minitauros]

You should not use that exact example, but modify it to your own needs. Or did you do that already and is it still not working?