urgent answer required now :

Sorry for asp.net. I think you should try little bit of Google and you will get the answer.

I Think this should work....

It's not too complicated.

You got a sandbox account for testing already? If not, signup for seller/buyer test-account at sandbox.paypal.com. Maybe need different e-mail addresses for both, not sure.

1.) In your submit form enter the path to your IPN script e.g. pp.notifiy.php

 type="hidden" name="notify_url" value="http://my.test/pp.notifiy.php" />

Also in your PayPal merchant/sandbox account settings, specify the URL of your listener. The listener script must not be firewalled. It will receive $_POST from PayPal.

2.) After successful payment,

Paypal will post to your listener script (e.g. pp.notifiy.php)
and the listener would post a duplicate of the post-stuff back.
You are checking the body for the string VERIFIED to process the order and update your db.

I prefer the cURL solution, as PayPal had changes recently, which caused some troubles, with the cURL solution it worked fine for me especially when sandbox testing. Need cURL extension to be active in PHP.

For the cURL solution, read more on PayPal Developer: How To Process Instant Payment Notification (IPN) Messages; the other solution, which I'd NOT recommend uses fsockopen.

Here are parts of my working cURL listener script (pp.notify.php)

#$pp_url = "https://www.paypal.com/cgi-bin/webscr"; $pp_url = "https://www.sandbox.paypal.com/cgi-bin/webscr";  // build the request / postback $req = 'cmd=_notify-validate';  foreach($_POST AS $k => $v) {   $v=urlencode(stripslashes($v));   $req.="&$k=$v"; }  // post back to PayPal system to validate using curl $ch = curl_init($pp_url); curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_RETURNTRANSFER,1); curl_setopt($ch, CURLOPT_POSTFIELDS, $req); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 1); curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2); curl_setopt($ch, CURLOPT_FORBID_REUSE, 1); curl_setopt($ch, CURLOPT_HTTPHEADER, array('Connection: Close'));  if(!($res=curl_exec($ch))) {   #error_log("Got " . curl_error($ch) . " when processing IPN data");   curl_close($ch);   exit; }  $res = trim($res); curl_close($ch);  // inspect IPN validation result and act accordingly if(strcmp($res,"VERIFIED")==0) {   // The IPN is verified   // update your db/process order...  } else if (strcmp($res,"INVALID")==0) {   // IPN invalid, log for manual investigation }

This would work on the sandbox too. So best to do a couple of tests. You should get the VERIFIEDand then process the order/update db. When all works fine, switch from sandbox to real PayPal and best to test that too at least once.

I hope this helps for getting started!

3 Replies

Know the answer? Post it — somebody with the same question will find it here.

Anurag Sarkar11y ago
Sorry for asp.net. I think you should try little bit of Google and you will get the answer.

I Think this should work....

It's not too complicated.
You got a sandbox account for testing already? If not, signup for seller/buyer test-account at sandbox.paypal.com. Maybe need different e-mail addresses for both, not sure.
1.) In your submit form enter the path to your IPN script e.g. pp.notifiy.php
```
 type="hidden" name="notify_url" value="http://my.test/pp.notifiy.php" />
```
Also in your PayPal merchant/sandbox account settings, specify the URL of your listener. The listener script must not be firewalled. It will receive $_POST from PayPal.
2.) After successful payment,
- Paypal will post to your listener script (e.g. pp.notifiy.php)
- and the listener would post a duplicate of the post-stuff back.
- You are checking the body for the string VERIFIED to process the order and update your db.
I prefer the cURL solution, as PayPal had changes recently, which caused some troubles, with the cURL solution it worked fine for me especially when sandbox testing. Need cURL extension to be active in PHP.
For the cURL solution, read more on PayPal Developer: How To Process Instant Payment Notification (IPN) Messages; the other solution, which I'd NOT recommend uses fsockopen.
Here are parts of my working cURL listener script (pp.notify.php)
```
#$pp_url = "https://www.paypal.com/cgi-bin/webscr"; $pp_url = "https://www.sandbox.paypal.com/cgi-bin/webscr";  // build the request / postback $req = 'cmd=_notify-validate';  foreach($_POST AS $k => $v) {   $v=urlencode(stripslashes($v));   $req.="&$k=$v"; }  // post back to PayPal system to validate using curl $ch = curl_init($pp_url); curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_RETURNTRANSFER,1); curl_setopt($ch, CURLOPT_POSTFIELDS, $req); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 1); curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2); curl_setopt($ch, CURLOPT_FORBID_REUSE, 1); curl_setopt($ch, CURLOPT_HTTPHEADER, array('Connection: Close'));  if(!($res=curl_exec($ch))) {   #error_log("Got " . curl_error($ch) . " when processing IPN data");   curl_close($ch);   exit; }  $res = trim($res); curl_close($ch);  // inspect IPN validation result and act accordingly if(strcmp($res,"VERIFIED")==0) {   // The IPN is verified   // update your db/process order...  } else if (strcmp($res,"INVALID")==0) {   // IPN invalid, log for manual investigation }
```
This would work on the sandbox too. So best to do a couple of tests. You should get the VERIFIEDand then process the order/update db. When all works fine, switch from sandbox to real PayPal and best to test that too at least once.
I hope this helps for getting started!
0
kamal sooftphoton11y ago
hello sir you were giving a link that belongs to asp.net but i have to need it in the php and don't give links just write simple clean and well eaxample for this process if would be here.

anyways thanks for suggestions...
0
Anurag Sarkar11y ago
Please visit this Website & Check the article about payment Gateway :-

http://www.dotnetfunda.com/articles/show/928/online-payments-using-paypal-integration-with-aspnet

Thanks
0