nuSoap Function is Not a Valid method

Question

When trying to instantiate my nuSoap method authenticateUser, it says:

Fatal error: Uncaught SoapFault exception: [Client] Function ("authenticateUser") is not a valid method for this service in /Applications/MAMP/htdocs/projo/dev/home.php:14

But when I replace that method name for one that already works, everything works just fine. So I think the instantiation syntax isn't wrong.

/*-----------
Authenticate User
------------*/
$server->register(
    // method name
    'authenticateUser',

    // input parameters
    array('sessionUserName' => 'xsd:string', 'sessionHash' => 'xsd:string', 'user' => 'xsd:string', 'pass' => 'xsd:string'),        

    // output parameters
    array('return' => 'xsd:string'),

    // namespace
    $namespace,

    // soapaction
    $namespace . '#authenticateUser',

    // style
    'rpc',

    // use
    'encoded',

    // documentation
    'authenticates a user and returns a json array of the user info'
);

function authenticateUser($sessionUserName, $sessionHash, $user, $pass)
{
    //Check to see if a countryCode was provided
    if ($sessionUserName != '' && $sessionHash != '' && $user == $GLOBALS['wsUser'] && $pass == $GLOBALS['wsPass'])
    {

        $suid = 'AUTH'.$GLOBALS['guid'].'SESSION';


        $database   = new SQLDatabase();
        $database->openConnection();
        $database->selectDb();

        //Query
        $sql    = "SELECT * FROM members WHERE member_email='" . $sessionUserName . "' LIMIT 1";

        //Query MySQL
        $return = $database->query($sql);
        $userDetails = $database->fetch_array( $return );



        if(!empty($userDetails)) {
            $userDetails[0]['authSession'] = $suid;
            $newArr = $userDetails[0];
            $response = json_encode($newArr);
        }

        /*print $sql.'<br /><pre>';
        print_r($response);
        echo '</pre>';*/

        //Throw SQL Errors
        if (!mysql_query($sql))
        {
                die('Error: ' . mysql_error());
        }

        //Return on Success
        return $response;   

        //Close Connection
        mysql_close($con);
    }
    else
    {
        return 'Error: You must supply all of the inputs!x';
    }
}

There are two things I can think of that would cause this error:

1. More likely: my registration of the function is somehow incorrect, even though the wsdl gui shows that the function is registered correctly and I've been able to successfully consume the method via the SoapUI program.

2. Less likely: somehow, the function isn't broken anymore, but its cached and so I'm seeing an old error.

The Question: When trying to consume this soap service method via PHP, why do I get an output error stating that this function doesn't exist in the service, when it clearly is?

Answer 1

Set

ini_set("soap.wsdl_cache_enabled", "0"); 

In every file you use soap from, or set wsdl_cache_enabled to 0 in your php.ini file.

[soap]
; Enables or disables WSDL caching feature.
soap.wsdl_cache_enabled=0