hello world,
there a link about Paypal tutorial, i have some error in the notify IPN side, which has no response of data sending back although it’s has a successful payment in sandbox mode.
the following is the code in php format
<?php
// CONFIG: Enable debug mode. This means we'll log requests into 'ipn.log' in the
same directory.
// Especially useful if you encounter network errors or other intermittent problems
with IPN (validation).
// Set this to 0 once you go live or don't require logging.
define("DEBUG", 1);
// Set to 0 once you're ready to go live
define("USE_SANDBOX", 1);
define("LOG_FILE", "ipn.log");
// 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
if(USE_SANDBOX == true) {
$paypal_url = "https://www.sandbox.paypal.com/cgi-bin/webscr";
} else {
$paypal_url = "https://www.paypal.com/cgi-bin/webscr";
}
$ch = curl_init($paypal_url);
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_SSL_VERIFYPEER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_FORBID_REUSE, 1);
if(DEBUG == true) {
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLINFO_HEADER_OUT, 1);
}
// CONFIG: Optional proxy configuration
//curl_setopt($ch, CURLOPT_PROXY, $proxy);
//curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
// Set TCP timeout to 30 seconds
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Connection: Close'));
// CONFIG: Please download 'cacert.pem' from
"http://curl.haxx.se/docs/caextract.html" and set the directory path
// of the certificate as shown below. Ensure the file is readable by the webserver.
// This is mandatory for some environments.
//$cert = __DIR__ . "./cacert.pem";
//curl_setopt($ch, CURLOPT_CAINFO, $cert);
$res = curl_exec($ch);
if (curl_errno($ch) != 0) // cURL error
{
if(DEBUG == true) {
error_log(date('[Y-m-d H:i e] '). "Can't connect to PayPal to validate IPN
message: " . curl_error($ch) . PHP_EOL, 3, LOG_FILE);
}
curl_close($ch);
exit;
} else {
// Log the entire HTTP response if debug is switched on.
if(DEBUG == true) {
error_log(date('[Y-m-d H:i e] '). "HTTP request of validation
request:". curl_getinfo($ch, CURLINFO_HEADER_OUT) ." for IPN payload: $req" .
PHP_EOL, 3, LOG_FILE);
error_log(date('[Y-m-d H:i e] '). "HTTP response of validation
request: $res" . PHP_EOL, 3, LOG_FILE);
}
curl_close($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 ($res, "VERIFIED") == 0) {
// 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'];
include("DBController.php");
$db = new DBController();
// check whether the payment_status is Completed
$isPaymentCompleted = false;
if($payment_status == "Completed") {
$isPaymentCompleted = true;
}
// check that txn_id has not been previously processed
$isUniqueTxnId = false;
$param_type="s";
$param_value_array = array($txn_id);
$result = $db->runQuery("SELECT * FROM payment WHERE txn_id =
?",$param_type,$param_value_array);
if(empty($result)) {
$isUniqueTxnId = true;
}
// check that receiver_email is your PayPal email
// check that payment_amount/payment_currency are correct
if($isPaymentCompleted) {
$param_type = "sssdss";
$param_value_array = array($item_number, $item_name,
$payment_status, $payment_amount, $payment_currency, $txn_id);
$payment_id = $db->insert("INSERT INTO payment(item_number,
item_name, payment_status, payment_amount, payment_currency, txn_id)
VALUES(?, ?, ?, ?, ?, ?)", $param_type, $param_value_array);
}
// process payment and mark item as paid.
if(DEBUG == true) {
error_log(date('[Y-m-d H:i e] '). "Verified IPN: $req ". PHP_EOL, 3,
LOG_FILE);
}
} else if (strcmp ($res, "INVALID") == 0) {
// log for manual investigation
// Add business logic here which deals with invalid IPN messages
if(DEBUG == true) {
error_log(date('[Y-m-d H:i e] '). "Invalid IPN: $req" . PHP_EOL, 3,
LOG_FILE);
}
}
?>
the above code comes from link PayPal Payment Gateway Integration in PHP - Phppot
i modified the above codes into Payments Controller in notify function, the codes as follows:-
public function notify()
{
// 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.
$request = new ServerRequest();
$raw_post_data = $request->getBody()->getContents();
$raw_post_array = explode('&', $raw_post_data);
$myPost = [];
foreach ($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') && ini_get('magic_quotes_gpc') == 1) {
$get_magic_quotes_exists = true;
} else {
$get_magic_quotes_exists = false;
}
foreach ($myPost as $key => $value) {
if ($get_magic_quotes_exists) {
$value = urlencode(stripslashes($value));
} else {
$value = urlencode($value);
}
$req .= "&$key=$value";
}
$DEBUG = true;
$USE_SANDBOX = true;
$LOG_FILE = 'ipn.log';
// your controller actions and methods go here
$SANDBOX_URL = 'https://www.sandbox.paypal.com/cgi-bin/webscr';
$PRODUCTION_URL = 'https://www.paypal.com/cgi-bin/webscr';
// Post IPN data back to PayPal to validate the IPN data is genuine
// Without this step anyone can fake IPN data
if ($USE_SANDBOX == true) {
$paypal_url = "https://www.sandbox.paypal.com/cgi-bin/webscr";
} else {
$paypal_url = "https://www.paypal.com/cgi-bin/webscr";
}
$client = new Client();
$response = $client->post($paypal_url, $req, [
'httpversion' => CURL_HTTP_VERSION_1_1,
'ssl_verify_peer' => true,
'ssl_verify_host' => 2,
'forbid_reuse' => true,
'connecttimeout' => 30,
'headers' => [
'Connection' => 'Close'
]
]);
if ($response->isOk()) {
$res = $response->getBody();
// Log the entire HTTP response if debug is switched on.
if ($DEBUG == true) {
error_log(date('[Y-m-d H:i e] ') . "HTTP request of validation request:" . $response->$this->request()->getHeadersAsString() . " for IPN payload: $req" . PHP_EOL, 3, $LOG_FILE);
error_log(date('[Y-m-d H:i e] ') . "HTTP response of validation request: $res" . PHP_EOL, 3, $LOG_FILE);
}
} else {
if ($DEBUG == true) {
error_log(date('[Y-m-d H:i e] ') . "Can't connect to PayPal to validate IPN message: " . $response->getReasonPhrase() . PHP_EOL, 3, $LOG_FILE);
}
exit;
}
// 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($res, "VERIFIED") == 0) {
// assign posted variables to local variables
$item_name = $this->request->getData('item_name');
$item_number = $this->request->getData('item_number');
$payment_status = $this->request->getData('payment_status');
$payment_amount = $this->request->getData('mc_gross');
$payment_currency = $this->request->getData('mc_currency');
$txn_id = $this->request->getData('txn_id');
$receiver_email = $this->request->getData('receiver_email');
$payer_email = $this->request->getData('payer_email');
// check whether the payment_status is Completed
$isPaymentCompleted = false;
if ($payment_status == "Completed") {
$isPaymentCompleted = true;
}
// check that txn_id has not been previously processed
// $isUniqueTxnId = false;
// $payment = $this->Payments->find()->where(['txn_id' => $txn_id])->first();
// if (empty($payment)) {
// $isUniqueTxnId = true;
// }
// check that receiver_email is your PayPal email
// check that payment_amount/payment_currency are correct
if ($isPaymentCompleted) {
$payment = $this->Payments->newEntity();
$payment = $this->Payments->patchEntity($payment, $this->request->getData());
$payment['item_name'] = $this->request->getData('item_name');
$payment['item_number'] = $this->request->getData('item_number');
$payment['payment_status'] = $this->request->getData('payment_status');
$payment['payment_amount'] = $this->request->getData('mc_gross');
$payment['payment_currency'] = $this->request->getData('mc_currency');
$payment['txn_id'] = $this->request->getData('txn_id');
$this->Payments->save($payment);
error_log(date('[Y-m-d H:i e] ') . "Verified IPN: $req " . PHP_EOL, 3, $LOG_FILE);
}
// process payment and mark item as paid.
if ($DEBUG == true) {
error_log(date('[Y-m-d H:i e] ') . "Verified IPN: $req " . PHP_EOL, 3, $LOG_FILE);
}
} else if (strcmp($res, "INVALID") == 0) {
// log for manual investigation
// Add business logic here which deals with invalid IPN messages
if ($DEBUG == true) {
error_log(date('[Y-m-d H:i e] ') . "Invalid IPN: $req" . PHP_EOL, 3, $LOG_FILE);
}
}
}
this notify seemed no response and not saving data to Payments table.
how can i modify the codes to rectify it?
thanks