10 Excellent Online Payment Systems
http://sixrevisions.com/tools/online-payment-systems/

Paypal Rest API
https://developer.paypal.com/webapps/developer/docs/api/

Paypal ACH
https://www.paypalobjects.com/webstatic/en_US/developer/docs/pdf/pp_achpayment_guide.pdf

Partial and Full payment refund using Paypal API
https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&content_ID=developer/e_howto_api_soap_r_RefundTransaction

Advertisements