global $woocommerce; $woocommerce->cart->add_to_cart( $product_id, $quantity );
global $woocommerce; $items = $woocommerce->cart->get_cart();
global $woocommerce; $woocommerce->cart->remove_cart_item( $item_key );
$cart = Mage::getSingleton('checkout/cart'); $product = Mage::getModel('catalog/product')->load($productId); $cart->addProduct($product, array('qty' => $qty)); $cart->save();
$cart = Mage::getSingleton('checkout/cart'); $items = $cart->getItems();
$cart = Mage::getModel('checkout/cart')->getQuote(); $id = $itemId; $cartItems = $cart->getAllItems(); foreach ($cartItems as $index => $item) { if ($item->getProduct()->getId() == $id) { $cart->removeItem($item->getId()); $cart->save(); break; } }Package library used: Magento In conclusion, the order item process can be implemented in PHP using various package libraries such as WooCommerce, Magento, or OpenCart. The code examples provided demonstrate how to add, retrieve and remove items from the cart in both WooCommerce and Magento, with the package library used being Magento in this instance.