This questionis a follow on to this question.
https://www.experts-exchange.com/questions/28964796/Paypal-Simple-Interface.html
I forgot to mention; we want the customer to be able to pay either through paypal (with paypal account) or via credit card. Does the awarded answer, based on
http://www.evoluted.net/thinktank/web-development/paypal-php-integration cover that case as well? Also, in some cases there may be a buyer whose paypal email is not the same as that we have in our database for that client; I presume the payer email used must be that of the payers paypal account, assuming the buyer want's to use their paypal account.
Thanks
My instinct is that instead of going to "evoluted" for PayPal advice you should go straight to PayPal. They have all kinds of helpful developer documentation. And if you want to save time you can hire a PayPal developer - they have links for that, too.
https://developer.paypal.com/