Impossible to retreive the customer id of the session in an external script

[torresl]

I created an external script test.php of Magento But, i don' t succeed to retreive the customer id of the session.
This cript runs well in dev 39 version but not in dev 41 version.
the script is as follows :
"require_once 'app/bootstrap.php';

/* Store or website code */

To test, firstly, i authentificate a user via Magento.
Secondly, i launch the script test.php. But the customer id isn' t displayed.

Thanks to explain how to retreive session customer data in an erternal script ? .
$mageRunCode = isset($_SERVER['MAGE_RUN_CODE']) ? $_SERVER['MAGE_RUN_CODE'] : '';
/* Run store or run website _/
$mageRunType = isset($_SERVER['MAGE_RUN_TYPE']) ? $SERVER['MAGE_RUN_TYPE'] : 'store';
/ Additional local.xml file from environment variable */
$options = array();
if (!empty($_SERVER['MAGE_LOCAL_CONFIG'])) {
$options['local_config'] = $_SERVER['MAGE_LOCAL_CONFIG'];
}

// Mage::init($mageRunCode, $mageRunType);
Mage::app($mageRunCode, $mageRunType);

$val= Mage::getSingleton('Mage_Customer_Model_Session')->getCustomer();

$customer_id = Mage::getSingleton('Mage_Customer_Model_Session')->getCustomerId() ;
$customer_name = Mage::getSingleton('Mage_Customer_Model_Session')->getCustomer()->getName();

echo $customer_id;

"
To test, firstly, i authentificate a user via Magento.
Secondly, i launch the script test.php. But the customer id isn' t displayed.

Thanks to explain how to retreive session customer data in an erternal script ? .

[amenk]

I guess @mage2-team closed this because it is more a support question. @keniosor Maybe try asking the question on http://magento.stackexchange.com/