Wrong use statement for Stripe in a Symfony2 Controller

Question

I'm using Stripe to make Payments for my Symfony2 web application and get an error trying to use the Stripe methods.

Attempted to load class "Stripe_Charge" from namespace "UserBundle\Controller".
Did you forget a "use" statement for another namespace?

I used composer to include the Stripe librarie like this :

Composer :

"require": {
    "php": ">=5.3.9",
    "symfony/symfony": "2.8.*",
    [...]
    "stripe/stripe-php": "dev-master"
}

In my controller, I have the executePaymentAction function but I have an error using Stripe in it.

Here is my Controller :

<?
namespace UserBundle\Controller;

use Stripe\Stripe;

class RegistrationSellerController extends Controller
{
    public function executePaymentAction(Request $request){

        $data = $request->request->all();

        Stripe::setApiKey('pk_test_***');
        try {
            Stripe_Charge::create([
                'amount' => 2000, // this is in cents: $20
                'currency' => 'usd',
                'card' => $_POST['stripeToken'],
                'description' => 'product description'
            ]);
        } catch (Stripe_CardError $e) {
            // Declined. Don't process their purchase.
            // Go back, and tell the user to try a new card
        }
    }
}

Answer 1

The error message is pretty obvious: You forgot the use statement for class Stripe_Charge