重复付款和Paypal后更新到期日期

Question

I'm looking to use Paypal to accept Credit Cards for a subscription service site. For example, someone would subscribe to the site and pay monthly. If they cancel, they would lose access to the site.

Customers would pay and get one month access and be billed monthly. Upon initially subscribing, an expiry date would be stored on the user account and if expired, the customer would lose access to the site.

How would I go about pushing the expiry date back one month every time a payment goes through successfully using Paypal and PHP ?

Is this the best way to go about handling these kinds of subscriptions?

Thanks for any input!

UPDATE : Once the subscription is made a PROFILEID number is given by Paypal and I will store it in a database. Whenever a user logs in, I want to query Paypal to see if they have paid using the the PROFILEID tied to the account.

How would I go about querying Paypal for that?

Answer 1

There are two ways for doing this:-

1. Save the both dates ( start date and expiry date ) with the user in same table. And update them both when user make payment. Start date would be when user make payment and you can calculate end date and save them in table.
2. Secondly, you can store both dates in different table with user's key as foreign key and and new values to this table when ever user makes payment. And check for latest entry into table to check for user's subscriptions.

Answer 2

PayPal具有定期付款产品： https : //developer.paypal.com/docs/classic/direct-payment/ht_dp-recurringPaymentProfile-curl-etc/