Best approach for multi payment methods (Stripe/Cashier and others)

@proboy I think using a common interface will fix the issue for you. Here is my plan:

interface PayableMethod
{
    public function charge(int $amount, array $options = []);
}

// CashPayment utilize PayableMethod
class StripePayment implements PayableMethod
{
    public function charge(int $amount, array $options = [])
    {
        // your code
    }
}

// CashPayment utilize PayableMethod
class CashPayment implements PayableMethod
{
    public function charge(int $amount, array $options = [])
    {
        // code for your cash payment
    }
}

// In your controller
class PaymentController
{
    private $paymentMethod;

    // Utilize interface here so that you can interchange easily
    public function __construct(PayableMethod $paymentMethod)
    {
        $this->paymentMethod = $paymentMethod;
    }

    public function charge(int $amount, array $options = [])
    {
        return $this->paymentMethod->charge($amount, $options);
    }
}
``