The following script allows you retrieve the username and password for Performance/Endurance Block storage. If you have not autorized hosts against the storage then you will get some basic information about the Block storage as a result.
<?php
/* You can use the getenv() module to pull your exported Username
and API key to keep from having to store them in your files */
require_once './vendor/autoload.php';
$apiUsername = getenv('SOFTLAYER_USERNAME');
$apiKey = getenv('SOFTLAYER_API_KEY');
$storageid = '123456';
try {
$client = \SoftLayer\SoapClient::getClient('SoftLayer_Network_Storage_Iscsi', $storageid, $apiUsername, $apiKey);
$objectMask = new \SoftLayer\Common\ObjectMask();
$objectMask->allowedHardware->allowedHost->credential;
$objectMask->allowedVirtualGuests->allowedHost->credential;
$client->setObjectMask($objectMask);
$response = $client->getObject();
print_r($response);
} catch(Exception $e) {
echo 'Unable to get Storage credentials: ' . $e->getMessage();
}
?>