Guest id and user id in Magento

Question

Is the user id value is same as guest id value after a guest has been place an order that means logged in?

$customerId = Mage::getModel('customer/session')->getCustomerId();
$vistitorId = Mage::getModel('core/session')->getVisitorId();

Please make me knock if my question is not clear.

Thanks

Answer 1

No. CustomerId is totally different from the visitorid. Magento Create Visitorid per session. But Customerid is created when user get registered.