What could be causing the issue of $num being greater than expected when deleting items from a shopping cart in PHP?

The issue of $num being greater than expected when deleting items from a shopping cart in PHP could be caused by incorrect logic in the deletion process. To solve this, ensure that the correct item is being targeted for deletion and that the quantity is properly updated after removal. 

// Sample code snippet for deleting items from a shopping cart

// Get the item ID to delete
$item_id = $_GET['item_id'];

// Loop through the cart items
foreach ($_SESSION['cart'] as $key => $item) {
    if ($item['id'] == $item_id) {
        // Remove the item from the cart
        unset($_SESSION['cart'][$key]);
        // Update the total quantity in the cart
        $_SESSION['total_quantity'] -= $item['quantity'];
        break;
    }
}

Keywords

PHP shopping cart deletion variable bug

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