Delete all product from cart

I have add a function in the app\code\core\Mage\Checkout\controllers\CartController.php


if you call this it will delete all item in the cart.


the url should be http://www.yoursite.com/index.php/checkout/cart/deleteall/


public function deleteallAction()
    {
        $cartHelper = Mage::helper('checkout/cart');
        $items = $cartHelper->getCart()->getItems();       
        foreach ($items as $item)
        {
                $itemId = $item->getItemId();
                $cartHelper->getCart()->removeItem($itemId)->save();
        }
        $this->_redirectReferer(Mage::getUrl('*/*'));
    }