Passing custom variables to paypal IPN

Question

I am trying to pass custom variables to paypal IPN. I can manage to pass one variable. But i don\'t know how to pass multiple variables.

My Process is something like

Answer 1

Yes, you can! You can use 'custom' variable and add in your form

And in your IPN.php:

$custom = $_POST['custom'];

And extract the variables from string