I have been using IPN on my web site for years and it has worked as advertised. I now need to add a field to the form that is sent to PayPal for processing. My question is, can I add my own fields to the form and will pay pal ignore those fields? Will paypal also return those fields to me upon verification?
You can only use the PayPal HTML Variables - the variable name must be exact as you see it in the HTML reference info - if you make up your own variable field name, it will be ignored or may cause your code to fail.
I kind of figured that paypal would ignore any fields that don't match their syntax. I was wondering if the system would return my added fields as it does the standard fields when the transactions completes. it's been a long time since I messed with this stuff. is there a way I can test the code?
