I'm trying to integrate paypal in a php website but I'm not sure how to use IPN.. or if IPN is the right choice.
In general, for $8 a user can post something for 30 days. After 30 days their posting will expire. For this I will need to insert into the database the date the user made a payment.
Is this possible with IPN? If yes, can someone please share some steps to doing so?