I am getting url like **http://localhost/webpt/ipn/checkout/?token=EC-2YD51592ET0280122&PayerID=VNH3J2KQEK8AS** and want to catach in my controller. in my controller code 

```
function checkout($token = array()) {
        echo"<pre>";
        print_r($token);
        echo"</pre>";
    }

```

but it show empty array.