PHP and PayPal IPN (x-posted)

    Date: 06/11/05 (PHP Development)    Keywords: php, web

    You'll have to excuse my relative noobishness. I'm not great at PHP, but unfortunately I have a job to do.

    Has anyone used PHP do do something with PayPal's Instant Payment Notification? I have to run a script that sends different messages to the buyer based on what product they buy. I have a script (mostly copied from PayPalDev, but I'd say I pretty much know what it's doing) that gets the variables from $_POST with fsockopen(). The script already redefines these array variables (i.e., what you would do if register_globals were off), and they seem like they're all there since it sends me mail when $payer_email is used with mail(). The problem I have is that $item_number prints blank every time.



    //set variables needed for email.

    $from = "wegottatalkbaby@optonline.net";

    $subject = "Responsible Choices Publishing Co. - File Location and Password";

    $msg_02 = "second message";

    $msg_03 = "third message";

    $msg_04 = "fourth message";



    // 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'];
    $payment_date = $_POST['payment_date'];
    $first_name = $_POST['first_name'];
    $last_name = $_POST['last_name'];
    $payment_type = $_POST['payment_type'];
    $payment_status = $_POST['payment_status'];
    $payment_gross = $_POST['payment_gross'];
    $payment_fee = $_POST['payment_fee'];
    $settle_amount = $_POST['settle_amount'];
    $memo = $_POST['memo'];
    $payer_email = $_POST['payer_email'];
    $receiver_email = $_POST['receiver_email'];
    $txn_id = $_POST['txn_id'];
    $txn_type = $_POST['txn_type'];
    $payer_status = $_POST['payer_status'];
    $address_street = $_POST['address_street'];
    $address_city = $_POST['address_city'];
    $address_state = $_POST['address_state'];
    $address_zip = $_POST['address_zip'];
    $address_country = $_POST['address_country'];
    $address_status = $_POST['address_status'];
    $item_name = $_POST['item_name'];
    $item_number = $_POST['item_number'];
    $tax = $_POST['tax'];
    $option_name1 = $_POST['option_name1'];
    $option_selection1 = $_POST['option_selection1'];
    $option_name2 = $_POST['option_name2'];
    $option_selection2 = $_POST['option_selection2'];
    $for_auction = $_POST['for_auction'];
    $invoice = $_POST['invoice'];
    $subscr_id = $_POST['subscr_id'];

    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

    // if 'VERIFIED', send email

    if ($item_number == 'RCP1101')
    {mail($payer_email, $subject, "You ordered the book", "From: $from");}

    else if ($item_number == 'RCP1102')
    {mail($payer_email, $subject, $msg_02, "From: $from");}

    else if ($item_number == 'RCP1103')
    {mail($payer_email, $subject, $msg_03, "From: $from");}

    else if ($item_number == 'RCP1104')
    {mail($payer_email, $subject, $msg_04, "From: $from");}

    else
    {mail("remix.sakura@gmail.com", "Not sent", "You ordered item $item_number", "From: $from");}

    }

    else if (strcmp ($res, "INVALID") == 0) {
    // log for manual investigation


    }
    }
    fclose ($fp);
    }





    I've tried a number of things, and now I'm up against a deadline. So I am humbly grateful for assistance from better programmers.

    Source: http://www.livejournal.com/community/php_dev/58444.html

« The PHP/mySQL issue || clickable url's & emails »


antivirus | apache | asp | blogging | browser | bugtracking | cms | crm | css | database | ebay | ecommerce | google | hosting | html | java | jsp | linux | microsoft | mysql | offshore | offshoring | oscommerce | php | postgresql | programming | rss | security | seo | shopping | software | spam | spyware | sql | technology | templates | tracker | virus | web | xml | yahoo | home