How to integrate FraudLabs Pro fraud detection with BrainTree payment?

Description: This tutorial demonstrate you on how to integrate FraudLabs Pro fraud detection into BrainTree payment.

PHP

Create a new table to store the transaction value of FraudLabs Pro and BrainTree 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,
	`braintree_transaction_id` VARCHAR(10) NOT NULL
	PRIMARY KEY (`flp_transaction_id`)
)
COLLATE='utf8_general_ci'
ENGINE=MyISAM;

Download FraudLabs Pro PHP class from http://www.fraudlabspro.com/downloads/FraudLabsPro.class.php.zip

Integrate FraudLabs Pro fraud detection logic with your BrainTree 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.class.php';

// Include BrainTree library
require_once 'PATH_TO_BRAINTREE/lib/Braintree.php';

// We show the example code using the SandBox environment.
Braintree_Configuration::environment('sandbox');
Braintree_Configuration::merchantId('use_your_merchant_id');
Braintree_Configuration::publicKey('use_your_public_key');
Braintree_Configuration::privateKey('use_your_private_key');

// Create a free user account at http://www.fraudlabspro.com, if you do not have one
$fraud = new FraudLabsPro('use_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
$fraudResult = $fraud->check(array(
	'ipAddress' => $_SERVER['REMOTE_ADDR'],
	'creditCardNumber' => $_POST['number'],
	'billingCountry' => $_POST['country'],
	'amount' => $_POST['amount']
));

// This transaction is legitimate, let's submit to Braintree
if($fraudResult->fraudlabspro_status == 'APPROVE'){
	// Submit for settlement
	$result = Braintree_Transaction::sale(array(
		'amount' => $_POST['amount'],
		'creditCard' => array(
			'number' => $_POST['number'],
			'cvv' => $_POST['cvv'],
			'expirationMonth' => $_POST['month'],
			'expirationYear' => $_POST['year']
		),
		'options' => array(
			'submitForSettlement' => true
		)
	));

	if ($result->success) {
		echo("Success! Transaction ID: " . $result->transaction->id);
	} else if ($result->transaction) {
		echo("Error: " . $result->message);
		echo("
");
		echo("Code: " . $result->transaction->processorResponseCode);
	} else {
		echo("Validation errors:
");
		foreach (($result->errors->deepAll()) as $error) {
			echo("- " . $error->message . "
");
		}
	}
}

// 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'){
	// Authorize this order with BrainTree, but no settlement
	$result = Braintree_Transaction::sale(array(
		'amount' => $_POST['amount'],
		'creditCard' => array(
			'number' => $_POST['number'],
			'cvv' => $_POST['cvv'],
			'expirationMonth' => $_POST['month'],
			'expirationYear' => $_POST['year']
		),
		'options' => array(
			'submitForSettlement' => false
		)
	));

	if ($result->success) {
		echo("Success! Transaction ID: " . $result->transaction->id);

		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, :braintreeId)');
			$st->execute(array(
				':flpId'=>$fraudResult->fraudlabspro_id,
				':flpStatus'=>$fraudResult->fraudlabspro_status,
				':braintreeId'=>$result->transaction->id
			));
		}
		catch(PDOException $e){
			// MySQL error
			die($e->getFile() . ':' . $e->getLine() . ' ' . $e->getMessage());
		}
	} else if ($result->transaction) {
		echo("Error: " . $result->message);
		echo("
");
		echo("Code: " . $result->transaction->processorResponseCode);
	} else {
		echo("Validation errors:
");
		foreach (($result->errors->deepAll()) as $error) {
			echo("- " . $error->message . "
");
		}
	}
}

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

$id = (isset($_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 BrainTree 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);

			require_once 'PATH_TO_BRAINTREE/lib/Braintree.php';

			Braintree_Configuration::environment('sandbox');
			Braintree_Configuration::merchantId('use_your_merchant_id');
			Braintree_Configuration::publicKey('use_your_public_key');
			Braintree_Configuration::privateKey('use_your_private_key');

			if($action == 'REJECT'){
				// Merchant rejected the order. Void the transaction in Braintree
				Braintree_Transaction::void($row['braintree_transaction_id']);
			}
			else{
				// Merchant approved the order. Submit for settlement
				Braintree_Transaction::submitForSettlement($row['braintree_transaction_id']);
			}

			// 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(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.

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 BrainTree 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);

		require_once 'PATH_TO_BRAINTREE/lib/Braintree.php';

		Braintree_Configuration::environment('sandbox');
		Braintree_Configuration::merchantId('use_your_merchant_id');
		Braintree_Configuration::publicKey('use_your_public_key');
		Braintree_Configuration::privateKey('use_your_private_key');

		// Issue the refund
		$result = Braintree_Transaction::refund($row['braintree_transaction_id']);

		// Update database
		$st = $db->prepare('UPDATE `fraudlabs_pro` SET `flp_status`=\'REFUNDED\' WHERE `flp_transaction_id`=:flpId');
		$st->execute(array(
			':flpId'=>$_POST['flpId']
		));
	}
}
catch(PDOException $e){
	// MySQL error
	die($e->getFile() . ':' . $e->getLine() . ' ' . $e->getMessage());
}

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