Request help, about PayPal payment return value Modify order status

I want an order on the site, with PayPal to pay the success after the return value to the site specified page, according to the payment success or failure to modify the status of the order has been paid success or payment failed.

Please all the experts to help solve the puzzle of my long-time problem!!!!!!!!!!!

Please provide the complete code or instance.

Requires PHP language.

What I want is to start from form-pay-return value-Change Order status.

Reply to discussion (solution)

Open PAYAPL IPN.
When PayPal is paid successfully, a URL is called from your server and the relevant parameters are passed to the URL.

Open PAYAPL IPN.
When PayPal is paid successfully, a URL is called from your server and the relevant parameters are passed to the URL.

What is the method to get the parameters after returning? For example, get a single order number.

Http://wenku.baidu.com/link?url= Faqoostiwt0ely--yelfts83huemtvjl68t8erdb4mivuroho2ovuycknzwcnrbyb4nk64jrir55hntt4fm7dqqnfmjmbajb4ch-5ljz8ei

Open PAYAPL IPN.
When PayPal is paid successfully, a URL is called from your server and the relevant parameters are passed to the URL.

What is the method to get the parameters after returning? For example, get a single order number.

You are in your receive URL, add
Print_r ($_request);
?>
I know what PayPal has to return to you.

