Paypal payment failed.

Hi,

Thanks for the useful reply.

I actually got my script working now but there is a problem with my ipn file. Once a payment is successful PayPal's IPN doesn't update  my MySQL database.

Is there an error in my coding?

<?php

//Include DB configuration file

include 'dbConfig.php';

/*

* Read POST data

* reading posted data directly from $_POST causes serialization

* issues with array data in POST.

* Reading raw POST data from input stream instead.

*/

$raw_post_data = file_get_contents('php://input');

$raw_post_array = explode('&', $raw_post_data);

$myPost = array();

foreach ($raw_post_array as $keyval) {

  $keyval = explode ('=', $keyval);

  if (count($keyval) == 2)

  $myPost[$keyval[0]] = urldecode($keyval[1]);

}

// Read the post from PayPal system and add 'cmd'

$req = 'cmd=_notify-validate';

if(function_exists('get_magic_quotes_gpc')) {

  $get_magic_quotes_exists = true;

}

foreach ($myPost as $key => $value) {

  if($get_magic_quotes_exists == true && get_magic_quotes_gpc() == 1) {

  $value = urlencode(stripslashes($value));

  } else {

  $value = urlencode($value);

  }

  $req .= "&$key=$value";

}

/*

* Post IPN data back to PayPal to validate the IPN data is genuine

* Without this step anyone can fake IPN data

*/

$paypalURL = "https://www.sandbox.paypal.com/cgi-bin/webscr";

$ch = curl_init($paypalURL);

if ($ch == FALSE) {

  return FALSE;

}

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_SSLVERSION, 6);

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 1);

curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);

curl_setopt($ch, CURLOPT_FORBID_REUSE, 1);

// Set TCP timeout to 30 seconds

curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);

curl_setopt($ch, CURLOPT_HTTPHEADER, array('Connection: Close', 'User-Agent: company-name'));

$res = curl_exec($ch);

/*

* Inspect IPN validation result and act accordingly

* Split response headers and payload, a better way for strcmp

*/

$tokens = explode("\r\n\r\n", trim($res));

$res = trim(end($tokens));

if (strcmp(trim($res), "VERIFIED") == 0 || strcasecmp($res, "VERIFIED") == 0) {

  //Payment data

  $txn_id = $_POST['txn_id'];

  $payment_gross = $_POST['mc_gross'];

  $currency_code = $_POST['mc_currency'];

  $payment_status = $_POST['payment_status'];

  $payer_email = $_POST['payer_email'];

  //Check if payment data exists with the same TXN ID.

  $prevPayment = $db->query("SELECT payment_id FROM payments WHERE txn_id = '".$txn_id."'");

  if($prevPayment->num_rows > 0){

  exit();

  }else{

  //Insert tansaction data into the database

  $insertPayment = $db->query("INSERT INTO payments(txn_id,payment_gross,currency_code,payment_status,payer_email) VALUES('".$txn_id."','".$payment_gross."','".$currency_code."','".$payment_status."','".$payer_email."')");

  if($insertPayment){

  //Insert order items into the database

  $payment_id = $db->insert_id;

  $num_cart_items = $_POST['num_cart_items'];

  for($i=1;$i<=$num_cart_items;$i++){

  $order_item_number = $_POST['item_number'.$i];

  $order_item_quantity = $_POST['quantity'.$i];

  $order_item_gross_amount = $_POST['mc_gross_'.$i];

  $insertOrderItem = $db->query("INSERT INTO order_items(payment_id,item_number,quantity,gross_amount) VALUES('".$payment_id."','".$order_item_number."','".$order_item_quantity."','".$order_item_gross_amount."')");

  }

  }

  }

}