Magneto: Remove cart or quote item by customer ID or Email Address

Script to remove the shopping cart / quote items of the customer using customer ID or customer Email.

Create a PHP file with below script and upload it into root folder of the Magento.

Then access the file on the browser with customerId parameter or customerEmail parameter.

If you don’t supply customerId or customerEmail it will display message and no action taken.

require_once 'app/Mage.php';
Mage::app()->getConfig()->getTempVarDir();
$customer = Mage::getModel('customer/customer')->setWebsiteId(Mage::app()->getWebsite()->getId());

$customerId = $customerEmail = '';
       if ( isset($_REQUEST['customerId']) ) {
        $customerId = $_REQUEST['customerId'];
       }

       if ( isset($_REQUEST['customerEmail']) ) {
        $customerEmail = $_REQUEST['customerEmail'];
       }
	
if (isset($customerId) and $customerId != '') {  
	$customer = $customer->load($customerId);
} elseif (isset($customerEmail) and $customerEmail != '' ) {
	$customer = $customer->loadByEmail($customerEmail);
} else {
               echo "customerId or customerEmail parameter required";
               exit;
       }

if ($customer->getId()) {

       $storeIds = Mage::app()->getWebsite(Mage::app()->getWebsite()->getId())->getStoreIds();

      $quote = Mage::getModel('sales/quote')->setSharedStoreIds($storeIds)->loadByCustomer($customer);

	if ($quote) {
		$collection = $quote->getItemsCollection(false);

		if ($collection->count() > 0) {
			foreach( $collection as $item ) {
				if ($item && $item->getId()) {
					$quote->removeItem($item->getId());
					$quote->collectTotals()->save();
				}
			}
		}
	}
}