// Check if cart exists if (isset($_SESSION["cart"])) { // Update cart array_push($_SESSION["cart"], array($product_id, $quantity)); } else { // Create new cart $_SESSION["cart"] = array(array($product_id, $quantity)); } }
// Add to cart if (isset($_POST["add_to_cart"])) { $product_id = 1; $quantity = 1; php id 1 shopping
// Checkout if (isset($_POST["checkout"])) { // Calculate total cost $total = 0; foreach ($_SESSION["cart"] as $item) { $product_id = $item[0]; $quantity = $item[1]; // Check if cart exists if (isset($_SESSION["cart"])) {
$total += $row["price"] * $quantity; }