Paypal IPN script by feha

Feha,
I just found this script on your site.
How much did you modify? Are you using this script on any of your sites? I'm looking for an easy way to incorporate Paypal into a new site I'm working on and the payment status will have to be added to my database so the customer can download what he paid for right after paying.

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I would like to know about this too.

I had made a modified version of IPN which is not working right.

I think there is a need for a good payments gateway script.

Hi
sorry for this but when someone else start a thread i do not get any automatic e-mails on someoneelse treads ...
Than is better to start in comments at: http://www.vision.to/CMS/Home/Comments.php?pid=301
This is a bit more enhanced version of original PayPal IPN.
As is it does not handle DB ...
There might be later some tutorial update on this, else i do paid custom work for those who needs ...

So what exactly did you enhance and how do we use your script. Writing the results of the transaction to a database is something I can do if I understand how to use your script. Thanks!

here is the original:

Code:

PHP 4.1

// read the post from PayPal system and add 'cmd'
$req = 'cmd=_notify-validate';

foreach ($_POST as $key => $value) {
$value = urlencode(stripslashes($value));
$req .= "&$key=$value";
}

// post back to PayPal system to validate
$header .= "POST /cgi-bin/webscr HTTP/1.0\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: " . strlen($req) . "\r\n\r\n";
$fp = fsockopen ('www.paypal.com', 80, $errno, $errstr, 30);

// assign posted variables to local variables
$item_name = $_POST['item_name'];
$item_number = $_POST['item_number'];
$payment_status = $_POST['payment_status'];
$payment_amount = $_POST['mc_gross'];
$payment_currency = $_POST['mc_currency'];
$txn_id = $_POST['txn_id'];
$receiver_email = $_POST['receiver_email'];
$payer_email = $_POST['payer_email'];

if (!$fp) {
// HTTP ERROR
} else {
fputs ($fp, $header . $req);
while (!feof($fp)) {
$res = fgets ($fp, 1024);
if (strcmp ($res, "VERIFIED") == 0) {
// check the payment_status is Completed
// check that txn_id has not been previously processed
// check that receiver_email is your Primary PayPal email
// check that payment_amount/payment_currency are correct
// process payment
}
else if (strcmp ($res, "INVALID") == 0) {
// log for manual investigation
}
}
fclose ($fp);
}
?>
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Copmare your self ...
You get more information that you want to process with my modified version ...

Oke and how do we use the script? The top says 'read the post from paypal' Is paypal sending a mail that needs to be processed or is this script being called by paypal? Please share a little bit on how to implement this sollution.

No Paypal does not send you e-mail , paypal calls your script ...

please login into your paypal account and read more how to setup your IPN

oke, I'll have a look. Thanks!

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oke, I'll have a look. Thanks!

you should also ask wineo, his integration of paypal in his directory is really "smooth"

care to share your secrets here wineo?

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Hi
sorry for this but when someone else start a thread i do not get any automatic e-mails on someoneelse treads ...

Ditto... LOL.

I will have to have a closer look at this thread and the script in question and get back to you.

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Well feha is right... the PayPal documents explain it all. Though it isn't very difficult at all.

The PayPal button that you make posts the script name that you want PayPal to reply to using "notify_url". You can add GET variables to the script like this... script.php?secret=blahblah. Once the transaction is successful, PayPal notifies this script with a reply. The code above, then checks with PayPal to see if it is correct and to make sure that it is a legit transaction. If it is correct, you can then do what you like in the section of the code that has "// process payment". You can update the transaction in your database and allow the person to download their file.

I think that you should start with the default code from PayPal and work into that code what you need for your system.

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Of course you can try something like this

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Of course you can try something like this

google bookmarked

Of course you can try something like this

I've downloaded that script and played with it for a bit. Looks like I've got a working paypal option on my site now!

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Yeah it is the most complete script for paypal, but of course it require some time to make it work

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