我使用了paypalphpsdk:https://github.com/paypal/merchant-sdk-php/blob/master/samples/RecurringPayments/CreateRecurringPaymentsProfile.php快速结帐运作良好，但使用定期付款有问题:token无效。sdk中的第152行，据说Atimestampedtoken,thevalueofwhichwasreturnedintheresponsetothefirstcalltoSetExpressCheckout.CallCreateRecurringPaymentsProf