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04.24.2008 at 09:57PM PDT, ID: 23352688
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google checkout : howto make a paypal like IPN

Asked by alicca in Web Languages/Standards, Scripting Languages, Open Source Programming

Tags: php

how to create a IPN by modifying my paypal IPN for google check out.

the IPN will do something with database ( when payment are success )

how to check with google wheter the payment are success?



i have take a look on google
http://code.google.com/apis/checkout/samples/Google_Checkout_Sample_Code_PHP.html

but i cant understand.


can some 1 modify the code?
Thanks

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==================== paypal IPN =====================================
<?
 
 
 
include("/home/dedicate/public_html/mafia/funcs.php");
 
 
 
// 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
 
 
 
// note: additional IPN variables also available -- see IPN documentation
 
 
 
$item_name = $_POST['item_name'];
 
 
 
$receiver_email = $_POST['receiver_email'];
 
 
 
$item_number = $_POST['item_number'];
 
 
 
$invoice = $_POST['invoice'];
 
 
 
$payment_status = $_POST['payment_status'];
 
 
 
$payment_gross = $_POST['payment_gross'];
 
 
 
$txn_id = $_POST['txn_id'];
 
 
 
$payer_email = $_POST['payer_email'];
 
 
 
 
 
 
 
if (!$fp) {
 
 
 
	$req .="&ERROR";
 
 
 
  // ERROR
 
 
 
  echo "$errstr ($errno)";
 
 
 
} else {
 
 
 
  fputs ($fp, $header . $req);
 
 
 
  while (!feof($fp)) {
 
 
 
    $res = fgets ($fp, 1024);
 
 
 
    if (strcmp ($res, "VERIFIED") == 0) {
 
 
 
				$req .="&FAILED";
 
 
 
        echo "<pre>";
 
 
 
        print_r($_POST);
 
 
 
        if($_POST[payment_status]=="Completed") {
 
 
 
 
 
 
 
if ((!fetch("SELECT tranid FROM $tab[paypal] WHERE tranid='$txn_id';")) && ($business == "webmaster@tmg-corporation.com"))
 
 
 
   {
 
 
 
 
 
 
 
 
 
 
 
    if($payment_gross == "5.00"){$turns="1000";}
 
 
 
elseif($payment_gross == "10.00"){$turns="3000";}
 
 
 
elseif($payment_gross == "25.00"){$turns="8000";}
 
 
 
elseif($payment_gross == "50.00"){$turns="20000";}
 
 
 
elseif($payment_gross == "100.00"){$turns="45000";}
 
 
 
elseif($payment_gross == "200.00"){$turns="95000";}
 
 
 
elseif($payment_gross == "400.00"){$turns="200000";}
 
 
 
elseif($payment_gross == "600.00"){$turns="350000";}
 
 
 
elseif($payment_gross == "1000.00"){$turns="700000";}
 
 
 
else{$turns="0";}
 
 
 
 
 
 
 
        $expires=$time+2592000;//120 days
 
 
 
        $total=$payment_gross-$payment_fee;
 
 
 
//update database to add turns to user in game they bought for
 
 
 
        mysql_query("UPDATE $tab[user] SET status='supporter', statusexpire='$expires', credits=credits+$turns WHERE username='$custom'");
 
 
 
//insert into database paypal information
 
 
 
        mysql_query("INSERT INTO $tab[paypal] (tranid,amount,fee,user,datebought) VALUES ('$txn_id','$payment_gross','$payment_fee','$custom','$time');");
 
 
 
//send email to admin about transaction from paypal--ADMIN-check database to make sure transaction went through to game
 
 
 
        mail_2("$turns credits were bought!","\nDear  mafia.dedicatedgamingnetwork.com,\n\nYou just received a payment from $custom for $turns credits\n\nCost: $$payment_gross\nFee: $$payment_fee\n----------\nTotal: $$total","webmaster@tmg-corporation.com");
 
 
 
 
 
 
 
   }else{echo"Cannot refresh transaction!";}
 
 
 
 
 
 
 
        }
 
 
 
      // check the payment_status is Completed
 
 
 
      // check that txn_id has not been previously processed
 
 
 
      // check that receiver_email is an email address in your PayPal account
 
 
 
      // process payment
 
 
 
      }
 
 
 
      else if (strcmp ($res, "INVALID") == 0) {
 
 
 
      	$req .="&FAILURE";
 
 
 
				// log for manual investigation
 
 
 
      }
 
 
 
  }
 
 
 
  fclose ($fp);
 
 
 
}
 
 
 
 
 
 
 
//mail_2("IPN TEST FOR MAFIACOMBAT.COM", "Here are the values submitted:\n$req", "info@ltrmedia.com")
 
 
 
 
 
 
 
?>
[+][-]04.24.2008 at 10:19PM PDT, ID: 21437193

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[+][-]04.24.2008 at 11:44PM PDT, ID: 21437422

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Zones: Web Languages/Standards, Scripting Languages, Open Source Programming
Tags: php
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Solution Provided By: mplungjan
Participating Experts: 1
Solution Grade: A
 
 
[+][-]04.25.2008 at 01:51AM PDT, ID: 21437839

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[+][-]04.25.2008 at 01:52AM PDT, ID: 21437841

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