Description: This tutorial demonstrates how to integrate FraudLabs Pro fraud detection service into Cardinity payment process. We will show you the step-by-step instructions using the PHP language in the below section.
Using PHP
Create a new table to store the transaction value of FraudLabs Pro and Cardinity payment processing. This table will be used during the settlement, void or refund process.
CREATE TABLE `fraudlabs_pro` ( `flp_transaction_id` CHAR(15) NOT NULL, `flp_status` VARCHAR(10) NOT NULL, `cardinity_payment_id` VARCHAR(30) NOT NULL, `cardinity_amount` DECIMAL(12,2) NOT NULL, PRIMARY KEY (`flp_transaction_id`) ) COLLATE='utf8_general_ci' ENGINE=MyISAM;
Download FraudLabs Pro PHP class from https://github.com/fraudlabspro/fraudlabspro-php/releases
Integrate FraudLabs Pro fraud detection logic with your Cardinity code. This code will perform a simple validation check of one credit card purchase and perform the appropriate action based on the fraud validation result.
// Include FraudLabs Pro library
require_once 'PATH_TO_FRAUDLABSPRO/lib/FraudLabsPro.php';
// Include Cardinity library
use Cardinity\Client;
use Cardinity\Method\Payment;
$client = Client::create([
'consumerKey' => 'your_consumer_key',
'consumerSecret' => 'your_consumer_secret_key',
]);
FraudLabsPro\Configuration::apiKey('your_fraudlabspro_api_key');
// Check this transaction for possible fraud. FraudLabs Pro support comprehensive validation check,
// and for this example, we only perform the IP address, BIN and billing country validation.
// For complete validation, please check our developer page at http://www.fraudlabspro.com/developer
$orderDetails = [
'order' => [
'amount' => $_POST['amount'],
'paymentMethod' => FraudLabsPro\Order::CREDIT_CARD,
],
'card' => [
'number' => $_POST['number'],
],
'billing' => [
'country' => $_POST['country'],
],
];
// Sends the order details to FraudLabs Pro
$fraudResult = FraudLabsPro\Order::validate($orderDetails);
// This transaction is legitimate, let's submit to Cardinity
if ($fraudResult->fraudlabspro_status == 'APPROVE') {
$method = new Payment\Create([
'amount' => $_POST['amount'],
'currency' => 'USD',
'settle' => true,
'country' => $_POST['country'],
'payment_method' => Payment\Create::CARD,
'payment_instrument' => [
'pan' => $_POST['number'],
'exp_year' => $_POST['card_exp_year'],
'exp_month' => $_POST['card_exp_month'],
'cvc' => $_POST['card_cvc'],
'holder' => $_POST['card_holder_name']
],
]);
$payment = $client->call($method);
}
// Transaction has been rejected by FraudLabs Pro based on your custom validation rules.
elseif ($fraudResult->fraudlabspro_status == 'REJECT') {
/*
Do something here, try contact the customer for verification
*/
}
// Transaction is marked for a manual review by FraudLabs Pro based on your custom validation rules.
elseif ($fraudResult->fraudlabspro_status == 'REVIEW') {
try {
$method = new Payment\Create([
'amount' => $_POST['amount'],
'currency' => 'USD',
'settle' => false,
'country' => $_POST['country'],
'payment_method' => Payment\Create::CARD,
'payment_instrument' => [
'pan' => $_POST['number'],
'exp_year' => $_POST['card_exp_year'],
'exp_month' => $_POST['card_exp_month'],
'cvc' => $_POST['card_cvc'],
'holder' => $_POST['card_holder_name']
],
]);
$payment = $client->call($method);
$paymentId = $payment->getId();
try{
// Initial MySQL connection
$db = new PDO('mysql:host=your_database_host;dbname=your_database_name;charset=utf8', 'your_database_user', 'your_database_password');
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
// Store the transaction information for decision making
$st = $db->prepare('INSERT INTO `fraudlabs_pro` VALUES (:flpId, :flpStatus, :cardinityId, :cardinityAmount)');
$st->execute(array(
':flpId'=>$fraudResult->fraudlabspro_id,
':flpStatus'=>$fraudResult->fraudlabspro_status,
':cardinityId'=>$paymentId,
':cardinityAmount'=>$_POST['amount']
));
}
catch(PDOException $e){
// MySQL error
die($e->getFile() . ':' . $e->getLine() . ' ' . $e->getMessage());
}
} catch (Exception\Declined $e) {
echo $e->getErrors();
}
}
Now, we are going to create a callback page to receive the review action, APPROVE or REJECT, performed by the merchant.
Note: You need to configure the callback URL at the FraudLabs Pro merchant area->settings page. It has to be pointed to the location where you hosted this “fraudlabspro-callback.php” file. Below is the sample code for fraudlabspro-callback.php.
// Include Cardinity library
use Cardinity\Client;
use Cardinity\Method\Settlement;
use Cardinity\Method\VoidPayment;
$id = (isset($_POST['id'])) ? $_POST['id'] : '';
$action = (isset($_POST['action'])) ? $_POST['action'] : '';
if($id && in_array($action, array('APPROVE', 'REJECT'))){
try{
// Initial MySQL connection
$db = new PDO('mysql:host=your_database_host;dbname=your_database_name;charset=utf8', 'your_database_user', 'your_database_password');
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
// Get the Cardinity Transaction ID
$st = $db->prepare('SELECT * FROM `fraudlabs_pro` WHERE `flp_transaction_id`=:flpId AND `flp_status`=\'REVIEW\'');
$st->execute(array(
':flpId'=>$id
));
if($st->rowCount() == 1){
$row = $st->fetch(PDO::FETCH_ASSOC);
$client = Client::create([
'consumerKey' => 'your_consumer_key',
'consumerSecret' => 'your_consumer_secret_key',
]);
$paymentId = $row['cardinity_payment_id'];
if($action == 'REJECT'){
// Merchant rejected the order. Void the transaction in Cardinity
try {
$method = new VoidPayment\Create(
$paymentId,
'your_description'
);
$result = $client->call($method);
// Update database
$st = $db->prepare('UPDATE `fraudlabs_pro` SET `flp_status`=:action WHERE `flp_transaction_id`=:flpId');
$st->execute(array(
':flpId'=>$id,
':action'=>$action
));
} catch (Exception\Declined $e) {
// This will print the detailed information on the exception.
echo $e->getErrors();
}
}
else{
// Merchant approved the order. Submit for settlement
try {
$method = new Settlement\Create(
$paymentId,
$row['cardinity_amount'],
'your_description'
);
$result = $client->call($method);
// Update database
$st = $db->prepare('UPDATE `fraudlabs_pro` SET `flp_status`=:action WHERE `flp_transaction_id`=:flpId');
$st->execute(array(
':flpId'=>$id,
':action'=>$action
));
} catch (Exception\Declined $e) {
// This will print the detailed information on the exception.
echo $e->getErrors();
}
}
}
}
catch(PDOException $e){
// MySQL error
die($e->getFile() . ':' . $e->getLine() . ' ' . $e->getMessage());
}
}
If there is a need to issue a refund of a settled transaction, below is the sample code of how to accomplish it.
// Include Cardinity library
use Cardinity\Client;
use Cardinity\Method\Refund;
try{
// Initial MySQL connection
$db = new PDO('mysql:host=your_database_host;dbname=your_database_name;charset=utf8', 'your_database_user', 'your_database_password');
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
// Get the Cardinity transaction ID based on the FraudLabs Pro ID
$st = $db->prepare('SELECT * FROM `fraudlabs_pro` WHERE `flp_transaction_id`=:flpId');
$st->execute(array(
':flpId'=>$_POST['flpId']
));
if($st->rowCount() == 1){
$row = $st->fetch(PDO::FETCH_ASSOC);
$client = Client::create([
'consumerKey' => 'your_consumer_key',
'consumerSecret' => 'your_consumer_secret_key',
]);
try {
// Process a refund
$method = new Refund\Create(
$row['cardinity_payment_id'],
$row['cardinity_amount'],
'your_description'
);
$refund = $client->call($method);
// Update database
$st = $db->prepare('UPDATE `fraudlabs_pro` SET `flp_status`=\'REFUNDED\' WHERE `flp_transaction_id`=:flpId');
$st->execute(array(
':flpId'=>$_POST['flpId']
));
} catch (Exception\Declined $e) {
// This will print the detailed information on the exception.
echo $e->getErrors();
}
}
}
catch(PDOException $e){
// MySQL error
die($e->getFile() . ':' . $e->getLine() . ' ' . $e->getMessage());
}
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