Programmatically create new customer and assign current quote

Question

I want to create customer programmatically and want to assign current login customer quote but unable to do that. Here is script, Please see and help me.

// create customer 

$websiteId = Mage::app()->getWebsite()->getId();            
$store = Mage::app()->getStore();
$firstname ="Firstname";
$lastname = "Lastname";
$email = "[email protected]";

$customer = Mage::getModel("customer/customer");
$customer->setWebsiteId($websiteId)
         ->setStore($store)                         
         ->setFirstname($firstname)                                         
         ->setLastname($lastname)
         ->setEmail($email) 
         ->setPassword('test123');

$customer->save();  
$customer_id = $customer->getId();  

// quote assign to new customer 
$session = Mage::getSingleton('checkout/session');
$current_quote_id = $session->getQuoteId();
$currentQuote = Mage::getModel('sales/quote')->load($current_quote_id);
$currentQuoteItem = $currentQuote->getAllItems();

$newQuote = Mage::getModel('sales/quote');
$newQuote->assignCustomer($customer);
$newQuote->addItem($currentQuoteItem);
$newQuote->setQuote($newQuote);
$newQuote->collectTotals()->save();

Above script is creating the customer but not assinging the quote in customer's account.

Answer 1

EDIT:

This script works. Tested.

try {
    // create customer 
    $websiteId = Mage::app()->getWebsite()->getId();
    $store = Mage::app()->getStore();
    $firstname = "Firstname";
    $lastname = "Lastname";
    $email = "[email protected]";
    $password = "test123";

    $customer = Mage::getModel("customer/customer");
    $customer->setWebsiteId($websiteId)
             ->setStore($store)
             ->setFirstname($firstname)
             ->setLastname($lastname)
             ->setEmail($email)
             ->setPassword($password);
    $customer->save();

    // set customer as logged in
    $session = Mage::getSingleton('customer/session');
    $session->login($email,$password);

    // quote assign to new customer
    $quoteObj = Mage::getModel('sales/quote');
    $quoteObj->assignCustomer($customer);
    $quoteObj->setStoreId($store->getId());
    $quoteObj->collectTotals();
    $quoteObj->setIsActive(true);
    $quoteObj->save();
} catch (Exception $ex) {
    var_dump($ex->getMessage());
}

Answer 2

It create issue because you $store_id is null in your case, try with some realistic store id and check it works fine.