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PayPal Issues

Posted on 2011-09-15
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Last Modified: 2012-05-12
I have been sing a php interface to PayPal to test credit card transactions on a web site. It works fine, but I find out now that it's what PayPal calls the "Pro" methods & will cost them more.

One alternative is described here: https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&content_ID=developer/e_howto_api_ECGettingStarted

In the section entitled "Testing an Express Checkout Integration", about half way down it talks about "Review the response string from the SetExpressCheckout API operation.". It is not clear to me how this response string is passed back to the "RETURNURL" page.

Can someone clarify?
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Question by:Richard Korts
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4 Comments
 
LVL 83

Expert Comment

by:Dave Baldwin
ID: 36545256
It's returned as a query string attached to the URL like https://www.yourcompany.com/page.html?param=value... (which is found on page 22 of PP_ExpressCheckout_IntegrationGuide.pdf ).  That means your PHP page has to pickup that info from the $_GET array on that page.
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Author Comment

by:Richard Korts
ID: 36545284
To DaveBaldwin:

Thanks, I understand how to use $_GET, etc., I didn't see where it was passed or what it is called.

Can you give me the link to PP_ExpressCheckout_IntegrationGuide.pdf?

I don't know where that is.
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LVL 17

Expert Comment

by:nanharbison
ID: 36545301
You can just use a class that is already written that will do all the work for you, here is one, written by the same person who did an Authorize.net class that I have used, which was excellent:
https://github.com/Quixotix/PHP-PayPal-IPN
and he wrote a tutorial on how to use it as well:
http://www.micahcarrick.com/paypal-ipn-with-php.html
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LVL 83

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Dave Baldwin earned 500 total points
ID: 36545324
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