检查 Stripe 和 Paypal 沙盒，以及有关支付网关及其比较的更多信息，请查看我的答案在此处.

Check Stripe and Paypal Sandbox, and also more information about payment gateways and their comparations check my answer at here.

条纹沙盒

贝宝沙盒

Authorize.net 付款图第 3 步所以是的，它支持多个网关，因为它将付款发送到发卡行(通过 IIN(发卡行识别号)识别).

Authorize.net Payment Diagram Step 3 so yes it support multiple gateways because it sends the payment the issuer bank(which is the identified via IIN(Issuer Identification Number)).

The Merchant Bank's Processor submits the transaction to the credit card network (like Visa or MasterCard). The credit card network routes the transaction to the bank that issued the credit card to the customer.