aRo` automating your e-commerce

paypal ipn postback on a custom port.

When we were developping the paypal IPN script for our ecommerce project solidshops.com, we ran into a strange limition.

Apparently paypal does not allow you to post back to a url with a custom port. Only http(80) and https(443) are allowed.

We solved it by using the paypal ipn proxy below. You should put this script on a different server and it will post all the IPN data to your application on port 8080.

The $url should be changed to the webapplication(on custom port) where the paypal data is processed.

PLAIN TEXT

PHP:

1. $url = 'http://www.yourdomain.com:8080/ipnscript.php';
2.        
3. $fields = $_POST;
4. if (count ( $fields )> 0) {
5.            
6.     //url-ify the data for the POST
7.     foreach ( $fields as $key => $value ) {
8.         $fields_string .= $key . '=' . $value . '&';
9.     }
10.     rtrim ( $fields_string, '&' );
11.            
12.     //open connection
13.     $ch = curl_init ();
14.            
15.     //set the url, number of POST vars, POST data
16.     curl_setopt ( $ch, CURLOPT_URL, $url );
17.     curl_setopt ( $ch, CURLOPT_POST, count ( $fields ) );
18.     curl_setopt ( $ch, CURLOPT_POSTFIELDS, $fields_string );
19.            
20.     //execute post
21.     $result = curl_exec ( $ch );
22.            
23.     //close connection
24.     curl_close ( $ch );
25. }

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