/** * Update the quantity of the subscription. * * @param \Stripe_Customer $customer * @param int $quantity * @return void */ public function updateQuantity($customer, $quantity) { $subscription = ['plan' => $customer->subscription->plan->id, 'quantity' => $quantity]; if ($trialEnd = $this->getTrialEndForUpdate()) { $subscription['trial_end'] = $trialEnd; } $customer->updateSubscription($subscription); }