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POPaypal: Invalid IPN problem
 

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  1. POPaypal: Invalid IPN problem
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    <p>Hi I know that there are many questions already in SO related to my problem but I have not got solution from any of them. I have implemented paypal. It is working well. Now I want to implement ipn in my paypal implementation. I have searched through and found some code. I have implemented that but I am getting invalid ipn. I can get all details from paypal transaction but for ipn it is always invalid. I have used following code in DoExpressCheckoutPayment.php file</p> <pre><code>$req = 'cmd=_notify-validate'; foreach ($_POST as $key =&gt; $value) { $value = urlencode(stripslashes($value)); $req .= "&amp;$key=$value"; } // post back to PayPal system to validate $header = "POST /cgi-bin/webscr HTTP/1.0\r\n"; // If testing on Sandbox use: $header .= "Host: www.sandbox.paypal.com:443\r\n"; //$header .= "Host: www.paypal.com:443\r\n"; $header .= "Content-Type: application/x-www-form-urlencoded\r\n"; $header .= "Content-Length: " . strlen($req) . "\r\n\r\n"; // If testing on Sandbox use: //$fp = fsockopen ('ssl://www.sandbox.paypal.com', 443, $errno, $errstr, 30); $fp =fsockopen('ssl://www.sandbox.paypal.com',443,$err_num,$err_str,30); echo('&lt;br&gt;'.$req); // 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) { echo(' HTTP ERROR'); } else { fputs ($fp, $header . $req); while (!feof($fp)) { $res = fgets ($fp, 1024); echo('&lt;br&gt; res is '.$res); if (strcmp ($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 $mail_From = "From: me@mybiz.com"; $mail_To = "xxxx@gmail.com"; $mail_Subject = "VERIFIED IPN"; $mail_Body = $req; foreach ($_SESSION as $key =&gt; $value) { $emailtext .= $key . " = " .$value ."\n\n"; } if(mail($mail_To, $mail_Subject, $emailtext . "\n\n" . $mail_Body, $mail_From)) echo('&lt;br&gt;mail 1 sent'); else echo('&lt;br&gt;mail1 not sent'); } else if (strcmp ($res, "INVALID") == 0) { // log for manual investigation $mail_From = "From: me@mybiz.com"; $mail_To = "xxx@gmail.com"; $mail_Subject = "INVALID IPN"; $mail_Body = $req; foreach ($_SESSION as $key =&gt; $value) { $emailtext .= $key . " = " .$value ."\n\n"; } if(mail($mail_To, $mail_Subject, $emailtext . "\n\n" . $mail_Body, $mail_From)) echo('&lt;br&gt;mail sent'); else echo('&lt;br&gt;not sent'); } } fclose ($fp); } </code></pre> <p>I am setting notify_url in other file which is directing to this file like this</p> <pre><code>&amp;lt;input type="hidden" name="notify_url" value="http://www.mysite.com/paypal/DoExpressCheckoutPayment.php"/&gt; </code></pre> <p>I am getting the following email:</p> <pre><code>**notify_url = http://www.mysite.com/paypal/DoExpressCheckoutPayment.php cmd=_notify-validate&amp;notify_url=http%3A%2F%2Fwww.mysite.com%2Fpaypal%2FDoExpressCheckoutPayment.php** </code></pre> <p><strong>One thing that I have notice that I am not getting any thing from $_POST. My $_POST is empty.</strong> Please tell me where I am wrong. Thanks</p>
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    1. USAwais Qarni
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      1. POPaypal: Invalid IPN problem
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    1. COWhat is not working? Stuff like this can rarely be sorted by looking at the code, but by debugging in the live environment.
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      1. POPaypal: Invalid IPN problem
      1. USPekka 웃
    2. COhave you been to your paypay profile and set the ipn to on? https://www.paypal.com/cgi-bin/customerprofileweb?cmd=_profile-ipn-notify
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      1. USLawrence Cherone
    3. CO@Awais - Try putting the email function outside of the Valid/Invalid statements and send yourself the `$req` string received from PP. Then you can check out why it is not being processed correctly.
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      1. USKit
 

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