Internal Server Error when using php cloud files with swift openstack
===

I am currently using php could files as API for swift on a SAIO install with tempauth .
Executing the php file :



               <?php
               require('cloudfiles.php');
               $username="test:teste";
               $api_key="AUTH_tkfec9a726c0584d3d8f0150eb36446fd4";
               $auth = new CF_Authentication($username, $api_key);
               $auth->authenticate();
                if ( $auth->authenticated() )
                        echo "CF Authentication successful \n";
                else   
                     echo "Authentication faile \n"; ?>

the execution didnt work because some authentication problem:

PHP Fatal error:  Uncaught exception 'AuthenticationException' with message 'Invalid username or access key.

The user name and the api_key are corrects (tested with swift command and I could make operation on containers on swift ? I am wondering how it works when authenticating ? any idea
