Paypal IPN Passing Variables

[clanstyles]

I finally found and fixed an ipn. I am trying to integrate it into my site. Now, when somebody goes off my page to paypal to pay. How do I check if they are logged in to give them credits. Does that make sense?

[tcollie]

I'm using the supplied PHP IPN from the PDN and it's unaltered except for my database update scripts to update my users, so just find this line:

 

    // send an email in any case
echo "Verified";
     mail($notify_email, "VERIFIED IPN", "$res\n $req\n $strQuery\n $struery\n  $strQuery2");

 

Then add in your user update scripts.

 

You will want to add a "custom" field to your actual form and then retrieve the value of your "custom" field in the IPN which will come through as $custom.  I use the "custom" field to include the USER ID of my user.