[fw-webservices] Zend_XmlRpc_Server - Calling parameters do not match

Server Code:

class RpcController extends Zend_Controller_Action {

    public function indexAction() {
        $this->_helper->viewRenderer->setNoRender();
        $server = new Zend_XmlRpc_Server();
        $server->setEncoding('utf-8');
        $server->setClass('MyLib_Rpc');
        $this->getResponse()->clearBody();
        $this->getResponse()->setBody($server->handle());
    }
}


class MyLib_RPC {

    /**
     * @param string $key
     * @return string
     */
    public function login($key) {
         $sid = md5($key);
         retunr $sid;
    }
}


print_r($server->getSystem()->methodSignature('login'));

Question:

This code work on different servers. On some servers it's ok and return

Array
 (
    [0] => Array
         (
            [returnType] => void
             [parameters] => Array
                (
                     [0] => string
                )
 
        )
)
 
on other its return struct. 
Where is problem ? What php extensions need for this code ?

--
Andrey Korolyov | WEB Developer

e | akorolyov@gmail.com