PayPal\Service\PayPalAPIInterfaceServiceService::SetAuthFlowParam PHP Method

    public function SetAuthFlowParam($setAuthFlowParamReq, $apiCredential = null)
    {
        $apiContext = new PPApiContext($this->config);
        $handlers = array(new PPMerchantServiceHandler($apiCredential, self::$SDK_NAME, self::$SDK_VERSION));
        $this->setStandardParams($setAuthFlowParamReq->SetAuthFlowParamRequest);
        $ret = new SetAuthFlowParamResponseType();
        $resp = $this->call('PayPalAPIAA', 'SetAuthFlowParam', $setAuthFlowParamReq, $apiContext, $handlers);
        $ret->init(PPUtils::xmlToArray($resp));
        return $ret;
    }

$reqDetails->CancelURL = $_REQUEST['cancelURL'];
$reqDetails->ReturnURL = $_REQUEST['returnURL'];
$reqDetails->LogoutURL = $_REQUEST['logoutURL'];
$reqType = new SetAuthFlowParamRequestType();
$reqType->SetAuthFlowParamRequestDetails = $reqDetails;
$req = new SetAuthFlowParamReq();
$req->SetAuthFlowParamRequest = $reqType;
/*
 * 	 ## Creating service wrapper object
		 Creating service wrapper object to make API call and loading
		Configuration::getAcctAndConfig() returns array that contains credential and config parameters
*/
$paypalService = new PayPalAPIInterfaceServiceService(Configuration::getAcctAndConfig());
try {
    /* wrap API method calls on the service object with a try catch */
    $setAuthFlowParamResponse = $paypalService->SetAuthFlowParam($req);
} catch (Exception $ex) {
    include_once "../Error.php";
    exit;
}
if (isset($setAuthFlowParamResponse)) {
    echo "<pre>";
    print_r($setAuthFlowParamResponse);
    echo "</pre>";
    if ($setAuthFlowParamResponse->Ack == 'Success') {
        $token = $setAuthFlowParamResponse->Token;
        $payPalURL = 'https://www.sandbox.paypal.com/webscr&cmd=_account-authenticate-login&token=' . $token;
        echo "<a href={$payPalURL}><b>* Redirect to paypal to login</b></a><br>";
    }
}
require_once '../Response.php';