Magento – Update cart quantity programatically

In this post we will show you how to Update cart quantity programatically in magento. by using this code you can Update cart quantity programatically. for execute this code you have to create update-cart-quantity.php(create file in root of Magento) programatically and pest code in file and pass quantity($qty) and product id($item_id) in variable.

Magento Update cart quantity programatically
Magento Update quantity of cart programatically