从外部页Magento的会议（同一个域）(Magento Session from external

我需要检查用户注册并获取您的信息，但都在同一个领域内，但Magento的结构之外的文件：/mymagento/islogged.php

require_once ('app/Mage.php');
Mage::app(); 

define('ROOT', Mage::getBaseUrl(Mage_Core_Model_Store::URL_TYPE_WEB));

$sessionCustomer = Mage::getSingleton("customer/session");
if($sessionCustomer->isLoggedIn()) {
    $customer = $sessionCustomer->getCustomer();
    $telefono = $customer->getTelefonoMovil();
} else {
    header('Location: '.ROOT.'customer/account/login/');
}

但是，这是行不通的，找不到会话。我已阅读下列主题：

Magento的会议不对外页面工作（同一域）
Magento的客户/会话不工作
如何Magento的外部创建一个Magento的会议？
如何从Magento的外部访问的Magento用户会话？
检查外部网页Magento的登录
获取Magento的会话变量在另一页

最后我做了如下：

require_once ('app/Mage.php');
Mage::app(); 

// Define the path to the root of Magento installation.
define('ROOT', Mage::getBaseUrl(Mage_Core_Model_Store::URL_TYPE_WEB));

// Obtain the general session and search for an item called 'customer_id'
$coreSession = Mage::getSingleton('core/session', array('name' => 'frontend'));
if(isset($coreSession['visitor_data']['customer_id'])){
    $customerId = $coreSession['visitor_data']['customer_id'];
} else {
    header('Location: '.ROOT.'customer/account/login/');
}

// Load the user session.
Mage::getSingleton('customer/session')->loginById($customerId);
$customerSession = Mage::getSingleton("customer/session");

// We verified that created successfully (not required)
if(!$customerSession->isLoggedIn()) {
    header('Location: '.ROOT.'customer/account/login/');
}

// Load customer
$customer = $customerSession->getCustomer();

// We get cell phone
$telefono = $customer->getTelefonoMovil();