How to add hidden item to cart in magento?

Question

JavaScript

There is an information page.
The goal is to click on the button to add a hidden product to the cart.
It is not required to display the product on the page, you just need to send it by clicking to the basket.

How to do it?

Answer 1

Рабочий вариант:
<?php
  $productId = '123'; 
  $qty = '3';
  $product = Mage::getModel('catalog/product')->load($productId);
  $cart = Mage::getModel('checkout/cart');
  $cart->init();
  $cart->addProduct($product, array('qty' => $qty));
  $cart->save();
  Mage::getSingleton('checkout/session')->setCartWasUpdated(true);
?>

You can access the page with this code with Ajax