Reputation: 7045
I know how to make a PayPal donate button redirect after payment, but what I need to know is, can you pass the payed amount through this redirection. So it would redirect to http://example.com/donate?amount=123
, is this even possible?
Thanks!
EDIT: It seems I can do it with IPN(?), I just don't know how to use paypal's IPN, can anyone help me? (yes I have read the docs, they are confusing)
Upvotes: 2
Views: 4046
Reputation: 2456
yes it is possible, like so:
<!-- where you setup your paypal button : -->
<input type="hidden" name="return" value="http://example.com/donate?amount=<?php echo $amount ?>" />
But (concerning security)
It would be better to keep it in e.g. $_SESSION['amount']
along with a reference id $_SESSION['reference_id'] = md5('whatever you like' . 'plus salt');
And in the paypal button use that reference_id like so:
<input type="hidden" name="return" value="http://example.com/donate?ref=<?php echo $_SESSION['reference_id'] ?>" />
And then, if $_GET['ref'] == $_SESSION['reference_id']
, then you can use the $_SESSION['amount'] variable.
Upvotes: 3