[PHP Paypal Sandbox]

i'm guess that you mean you tried using generated buy now/add to cart/check out buttons and you would like to change this so that the cart is built on your site, with the contents being stored in a database, then when the cart is finalized, you display the complete cart contents in a form that paypal expects, with a check out button that takes the visitor to the paypal site to finalize the order?

 

if so, you would write (or find a script) to implement the cart on your site, then see the paypal cart upload command to submit the cart information and take the visitor to the paypal site -  https://developer.paypal.com/webapps/developer/docs/classic/paypal-payments-standard/integration-guide/cart_upload/

Erm nope. I am not trying to make a cart. I currently have the Paypal payment form and it's working. However I wished to make it more secure by checking the details of the form against my database details before it is posted to Paypal. 

[PHP Paypal Sandbox]

Hi guys I am now current trying to implement Paypal sandbox in my website for testing. I used the form generated by Paypal and it worked. However, I wish to make it more secure by verifying the POST details against my database first before posting to Paypal. I have read on the internet for a few days and download a few sample codes to try out, however I still dun understand how it works. The thing I read on is IPN (Instant Payment Notification) for Paypal. Am I reading the right thing? If I am can anyone help me out cause I do not really understand part of it.