Yii NuSoap

public function actionSoapclient()
{
    if(isset($_POST['dn']))
    {
        $NoPel = $_POST['dn'];
        if (preg_match ("/^([0-9]+)$/", $DN)) {
            $NuSOAPLibPath = Yii::getPathOfAlias('ext.nusoap');
            include($NuSOAPLibPath . DIRECTORY_SEPARATOR . 'nusoap.php');

            $client = new nusoap_client('http://www.domain.com/proses.php');

            //Baris setCredentials dipake kalo butuh autentikasi
            $client->setCredentials("remotedata","@@@@@dont_try_this@@@@@","basic");

            $BacaSOAP = $client->call('inquiry', array('DN' => $NoPel, 'CODE' => '007'));

            echo CJSON::encode($BacaSOAP);
        }else{
            Yii::app()->end();
        }
    }else{
        Yii::app()->end();
    }
}