Braintree (PayPal) Payment gateway integration with 3D secure option in PHP

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By using 3D secure, we provide an additional layer of verification to cardholders and merchants. In checkout process, braintree verify the card details to check does the card has enabled for 3D secure verification OR not. If the card is enabled for authenticate using 3D Secure, the Braintree SDK will display a web page which is provided by the card issuer. The 3D secure authentication page will verify the cardholder’s identity, which is usually done by entering a password.

Note : Before proceed with Braintree 3D secure integration, the braintree Sandbox Account is need to enabled for 3D secure. To enroll in 3D Secure, please contact the Braintree support team at support@braintreepayments.com

If want to make 3D secure transaction with specific payment method just checkout below script.

<?php

// Braintree library
require 'braintree/lib/Braintree.php';

$params = array(
	"testmode"   => "on",
	"merchantid" => "xxxxxxx",
	"publickey"  => "xxxxxxx",
	"privatekey" => "xxxxxxxxxxxxxxxxxxxxx",
);

$braintree_cust_id = "xxxxxxx";

if ($params['testmode'] == "on")
{
	Braintree_Configuration::environment('sandbox');
}
else
{
	Braintree_Configuration::environment('production');
}

Braintree_Configuration::merchantId($params["merchantid"]);
Braintree_Configuration::publicKey($params["publickey"]);
Braintree_Configuration::privateKey($params["privatekey"]);

if(isset($_POST['make_payment']) && $_POST['make_payment'])
{
	// Customer details
	$customer_firstname   = $_POST['c_firstname'];
	$customer_lastname    = $_POST['c_lastname'];
	$customer_email       = $_POST['c_email'];
	$customer_phonenumber = $_POST['c_phonenumber'];
	// EOF Customer details

	// Customer billing details
	$firstname = $_POST['firstname'];
	$lastname  = $_POST['lastname'];
	$email     = $_POST['c_email'];
	$address1  = $_POST['address1'];
	$address2  = $_POST['address2'];
	$city      = $_POST['city'];
	$state     = $_POST['state'];
	$postcode  = $_POST['postcode'];
	$country   = $_POST['country'];
	$phone     = $_POST['c_phonenumber'];
	// EOF Customer billing details

	$payment_method_nonce = "";
	$enable_3d_flag = ""; // 3D secure is apply only for credit card , if payment method is PayPal then skip it
	if(isset($_POST['payment_method_nonce']))
	{
		$payment_method_nonce = $_POST['payment_method_nonce'];
		$enable_3d_flag = 1;
	}
	else
	{
		$payment_method_details = get_default_payment_method($braintree_cust_id);
		$bt_result = Braintree_PaymentMethodNonce::create($payment_method_details["token"]);
		$payment_method_nonce = $bt_result->paymentMethodNonce->nonce;
		$enable_3d_flag = 0;
	}

	$sale = array(
				'amount'   => $_POST['amount'],
				'orderId'  => $_POST['invoiceid'],
				'paymentMethodNonce' => $payment_method_nonce,
				'customer' => array(
								'firstName' => $customer_firstname,
								'lastName'  => $customer_lastname,
								'phone'     => $customer_phonenumber,
								'email'     => $customer_email
							  ),
				'billing' => array(
								'firstName'         => $firstname,
								'lastName'          => $lastname,
								'streetAddress'     => $address1,
								'extendedAddress'   => $address2,
								'locality'          => $city,
								'region'            => $state,
								'postalCode'        => $postcode,
								'countryCodeAlpha2' => $country
							 ),
				'options' => array(
								'submitForSettlement'   => true,
								'storeInVaultOnSuccess' => true
							 )
			);
			
	if ($enable_3d_flag == 1)
	{
		$sale["options"]["three_d_secure"] = array('required' => true);
	}
						
	$result = Braintree_Transaction::sale($sale);
	if ($result->success)
	{
		echo "Braintree_cust_id : ".$braintree_cust_id = $result->transaction->_attributes['customer']['id'];
	}
	else
	{
		echo "Error : ".$result->_attributes['message'];
	}
	
	print_r($result); exit;
}
else
{
	$clientToken = Braintree_ClientToken::generate(array(
		 'customerId' => $braintree_cust_id
	));

	$payment_method_details = get_default_payment_method($braintree_cust_id);
	
	$bt_payment_method_nonce = "";
	
	if ($payment_method_details["is_pp_account"] != true)
	{
		$bt_result = Braintree_PaymentMethodNonce::create($payment_method_details["token"]);
		$bt_payment_method_nonce = $bt_result->paymentMethodNonce->nonce;
	}
}

function get_default_payment_method($braintree_cust_id)
{
	$bt_customer = Braintree_Customer::find($braintree_cust_id);
	$payment_method_details = array();
	
	foreach($bt_customer->creditCards as $key => $card_obj)
	{
		if ($card_obj->default)
		{
			$payment_method_details["imageUrl"] = $card_obj->imageUrl;
			$payment_method_details["cardType"] = $card_obj->cardType;
			$payment_method_details["last2"] = substr($card_obj->last4,2,2);
			$payment_method_details["expirationDate"] = $card_obj->expirationMonth."/".substr($card_obj->expirationYear,2,2);
			$payment_method_details["token"] = $card_obj->token;
			$payment_method_details["is_pp_account"] = false;
		}
	}
	
	foreach($bt_customer->paypalAccounts as $key => $card_obj)
	{
		if ($card_obj->default)
		{
			$payment_method_details["imageUrl"] = $card_obj->imageUrl;
			$payment_method_details["email"] = $card_obj->email;
			$payment_method_details["token"] = $card_obj->token;
			$payment_method_details["is_pp_account"] = true;
		}
	}

	return $payment_method_details;
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Braintree : Checkout</title>
</head>
<body>
<link href="style.css" type="text/css" rel="stylesheet" />
<h1 class="bt_title">Braintree 3D Secure Integration Demo</h1>
<div class="dropin-page">
<form id="checkout" method="post" action="" onSubmit="verify_3d_secure(); return false;">
  <h4 class="bt_title">Customer Information</h4>
  <input type="hidden" name="invoiceid" value="123456">
  <fieldset class="one_off_firstname">
    <label class="input-label" for="firstname">
    <span class="field-name">First Name</span>
    <input id="c_firstname" name="c_firstname" class="input-field card-field" type="text" placeholder="First Name" autocomplete="off">
    <div class="invalid-bottom-bar"></div>
    </label>
  </fieldset>
  <fieldset class="one_off_lastname">
    <label class="input-label" for="lastname">
    <span class="field-name">Last Name</span>
    <input id="c_lastname" name="c_lastname" class="input-field card-field" type="text" placeholder="Last Name" autocomplete="off">
    <div class="invalid-bottom-bar"></div>
    </label>
  </fieldset>
  <fieldset class="one_off_lastname">
    <label class="input-label" for="email">
    <span class="field-name">Email</span>
    <input id="c_email" name="c_email" class="input-field card-field" type="text" placeholder="Email" autocomplete="off">
    <div class="invalid-bottom-bar"></div>
    </label>
  </fieldset>
  <fieldset class="one_off_phonenumber">
    <label class="input-label" for="phonenumber">
    <span class="field-name">Phone Number</span>
    <input id="c_phonenumber" name="c_phonenumber" class="input-field card-field" type="text"placeholder="Phone Number" autocomplete="off">
    <div class="invalid-bottom-bar"></div>
    </label>
  </fieldset>
  <h4 class="bt_title">Customer Billing Information</h4>
  <fieldset class="one_off_firstname">
    <label class="input-label" for="firstname">
    <span class="field-name">First Name</span>
    <input id="firstname" name="firstname" class="input-field card-field" type="text" placeholder="First Name" autocomplete="off">
    <div class="invalid-bottom-bar"></div>
    </label>
  </fieldset>
  <fieldset class="one_off_lastname">
    <label class="input-label" for="lastname">
    <span class="field-name">Last Name</span>
    <input id="lastname" name="lastname" class="input-field card-field" type="text" placeholder="Last Name" autocomplete="off">
    <div class="invalid-bottom-bar"></div>
    </label>
  </fieldset>
  <fieldset class="one_off_address1">
    <label class="input-label" for="address1">
    <span class="field-name">Address1</span>
    <input id="address1" name="address1" class="input-field card-field" type="text" placeholder="Address" autocomplete="off">
    <div class="invalid-bottom-bar"></div>
    </label>
  </fieldset>
  <fieldset class="one_off_address2">
    <label class="input-label" for="address2">
    <span class="field-name">Address2</span>
    <input id="address2" name="address2" class="input-field card-field" type="text" placeholder="Address" autocomplete="off">
    <div class="invalid-bottom-bar"></div>
    </label>
  </fieldset>
  <fieldset class="one_off_city">
    <label class="input-label" for="city">
    <span class="field-name">City/Town</span>
    <input id="city" name="city" class="input-field card-field" type="text" placeholder="City/Town" autocomplete="off">
    <div class="invalid-bottom-bar"></div>
    </label>
  </fieldset>
  <fieldset class="one_off_state">
    <label class="input-label" for="state">
    <span class="field-name">State/Region</span>
    <input id="state" name="state" class="input-field card-field" type="text" placeholder="State/Region" autocomplete="off">
    <div class="invalid-bottom-bar"></div>
    </label>
  </fieldset>
  <fieldset class="one_off_postcode">
    <label class="input-label" for="postcode">
    <span class="field-name">Post Code</span>
    <input id="postcode" name="postcode" class="input-field card-field" type="text" placeholder="Post Code" autocomplete="off">
    <div class="invalid-bottom-bar"></div>
    </label>
  </fieldset>
  <fieldset class="one_off_country">
    <label class="input-label" for="country">
    <span class="field-name">Country</span>
    <input id="country" name="country" class="input-field card-field" type="text" placeholder="Country" autocomplete="off">
    <div class="invalid-bottom-bar"></div>
    </label>
  </fieldset>
  <h4 class="bt_title">Credit Card Details</h4>
  <fieldset style="margin-left: 220px;">
      <?php if ($payment_method_details["is_pp_account"]) { ?>
      <div align="center">
        <div style="float:left"> <img src="<?php echo $payment_method_details["imageUrl"] ?>" alt="PayPal" /> </div>
        <div style="float:left; margin-left: 10px;margin-top:7px"> <b><?php echo $payment_method_details["email"] ?></b> </div>
      </div>
      <?php } else { ?>
      <div align="center">
        <div style="float:left"> <img src="<?php echo $payment_method_details["imageUrl"] ?>" alt="<?php echo $payment_method_details["cardType"] ?>" /> </div>
        <div style="float:left; margin-left: 10px; margin-top:5px"> <b><?php echo $payment_method_details["cardType"] ?></b> <span style="color:#999">ending in <?php echo $payment_method_details["last2"] ?></span><br />
          <span style="color:#999">Expires <?php echo $payment_method_details["expirationDate"] ?></span> </div>
      </div>
      <?php } ?>
  </fieldset>
  <fieldset class="one_off_amount">
    <label class="input-label" for="amount">
    <span class="field-name">Amount</span>
    <input id="amount" name="amount" class="input-field card-field" type="number" inputmode="numeric" placeholder="Amount" autocomplete="off" step="any" required>
    <div class="invalid-bottom-bar"></div>
    </label>
  </fieldset>
  <div class="btn_container">
    <input type="hidden" name="make_payment" value="1">
    <input type="submit" value="Make Payment" class="pay-btn">
    <span class="loader_img"></span> </div>
</form>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script> 
<script src="https://js.braintreegateway.com/v2/braintree.js"></script> 
<!-- TO DO : Place below JS code in js file and include that JS file --> 
<script type="text/javascript">
  function verify_3d_secure()
  {
    var is_pp_account = "<?php echo $payment_method_details["is_pp_account"] ?>"; // check payment method is PayPal

    if (is_pp_account != true)
    {
        var client = new braintree.api.Client({
          clientToken: "<?php echo $clientToken; ?>"
        });

        client.verify3DS({
          amount: $("#amount").val(),
          creditCard: "<?php echo $bt_payment_method_nonce; ?>"
        }, function (error, response) {
          // Handle response
          if (!error) {
            // 3D Secure finished. Using response.nonce you may proceed with the transaction with the associated server side parameters below.
            appendTo(document.forms.checkout, 'input', {name: 'payment_method_nonce', type: 'hidden', value: response.nonce});
            document.forms.checkout.submit();
          } else {
            // Handle errors
            console.log("Error :"+error.message);
          }
        });
    }
    else
    {
      document.forms.checkout.submit();
    }
  }

  function appendTo($cont, childSelector, options)
  {
	var input = document.createElement(childSelector);
	input.type = options.type;
	input.name = options.name;
	input.value = options.value;
	$cont.appendChild(input);
  };
</script>
</body>
</html>

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<?php

// Braintree library

require 'braintree/lib/Braintree.php';

$params = array(

"testmode" => "on",

"merchantid" => "xxxxxxx",

"publickey" => "xxxxxxx",

"privatekey" => "xxxxxxxxxxxxxxxxxxxxx",

);

$braintree_cust_id = "xxxxxxx";

if ($params['testmode'] == "on")

{

Braintree_Configuration::environment('sandbox');

}

else

{

Braintree_Configuration::environment('production');

}

Braintree_Configuration::merchantId($params["merchantid"]);

Braintree_Configuration::publicKey($params["publickey"]);

Braintree_Configuration::privateKey($params["privatekey"]);

if(isset($_POST['make_payment']) && $_POST['make_payment'])

{

// Customer details

$customer_firstname = $_POST['c_firstname'];

$customer_lastname = $_POST['c_lastname'];

$customer_email = $_POST['c_email'];

$customer_phonenumber = $_POST['c_phonenumber'];

// EOF Customer details

// Customer billing details

$firstname = $_POST['firstname'];

$lastname = $_POST['lastname'];

$email = $_POST['c_email'];

$address1 = $_POST['address1'];

$address2 = $_POST['address2'];

$city = $_POST['city'];

$state = $_POST['state'];

$postcode = $_POST['postcode'];

$country = $_POST['country'];

$phone = $_POST['c_phonenumber'];

// EOF Customer billing details

$payment_method_nonce = "";

$enable_3d_flag = ""; // 3D secure is apply only for credit card , if payment method is PayPal then skip it

if(isset($_POST['payment_method_nonce']))

{

$payment_method_nonce = $_POST['payment_method_nonce'];

$enable_3d_flag = 1;

}

else

{

$payment_method_details = get_default_payment_method($braintree_cust_id);

$bt_result = Braintree_PaymentMethodNonce::create($payment_method_details["token"]);

$payment_method_nonce = $bt_result->paymentMethodNonce->nonce;

$enable_3d_flag = 0;

}

$sale = array(

'amount' => $_POST['amount'],

'orderId' => $_POST['invoiceid'],

'paymentMethodNonce' => $payment_method_nonce,

'customer' => array(

'firstName' => $customer_firstname,

'lastName' => $customer_lastname,

'phone' => $customer_phonenumber,

'email' => $customer_email

'billing' => array(

'firstName' => $firstname,

'lastName' => $lastname,

'streetAddress' => $address1,

'extendedAddress' => $address2,

'locality' => $city,

'region' => $state,

'postalCode' => $postcode,

'countryCodeAlpha2' => $country

'options' => array(

'submitForSettlement' => true,

'storeInVaultOnSuccess' => true

)

);

if ($enable_3d_flag == 1)

{

$sale["options"]["three_d_secure"] = array('required' => true);

}

$result = Braintree_Transaction::sale($sale);

if ($result->success)

{

echo "Braintree_cust_id : ".$braintree_cust_id = $result->transaction->_attributes['customer']['id'];

}

else

{

echo "Error : ".$result->_attributes['message'];

}

print_r($result); exit;

}

else

{

$clientToken = Braintree_ClientToken::generate(array(

'customerId' => $braintree_cust_id

));

$payment_method_details = get_default_payment_method($braintree_cust_id);

$bt_payment_method_nonce = "";

if ($payment_method_details["is_pp_account"] != true)

{

$bt_result = Braintree_PaymentMethodNonce::create($payment_method_details["token"]);

$bt_payment_method_nonce = $bt_result->paymentMethodNonce->nonce;

}

function get_default_payment_method($braintree_cust_id)

{

$bt_customer = Braintree_Customer::find($braintree_cust_id);

$payment_method_details = array();

foreach($bt_customer->creditCards as $key => $card_obj)

{

if ($card_obj->default)

{

$payment_method_details["imageUrl"] = $card_obj->imageUrl;

$payment_method_details["cardType"] = $card_obj->cardType;

$payment_method_details["last2"] = substr($card_obj->last4,2,2);

$payment_method_details["expirationDate"] = $card_obj->expirationMonth."/".substr($card_obj->expirationYear,2,2);

$payment_method_details["token"] = $card_obj->token;

$payment_method_details["is_pp_account"] = false;

}

foreach($bt_customer->paypalAccounts as $key => $card_obj)

{

if ($card_obj->default)

{

$payment_method_details["imageUrl"] = $card_obj->imageUrl;

$payment_method_details["email"] = $card_obj->email;

$payment_method_details["token"] = $card_obj->token;

$payment_method_details["is_pp_account"] = true;

}

return $payment_method_details;

}

<!DOCTYPE html>

<head>

<title>Braintree : Checkout</title>

</head>

<body>

<h1 class="bt_title">Braintree 3D Secure Integration Demo</h1>

<h4 class="bt_title">Customer Information</h4>

<span class="field-name">First Name</span>

</label>

</fieldset>

</label>

</fieldset>

<span class="field-name">Email</span>

</label>

</fieldset>

<span class="field-name">Phone Number</span>

</label>

</fieldset>

<h4 class="bt_title">Customer Billing Information</h4>

<span class="field-name">First Name</span>

</label>

</fieldset>

</label>

</fieldset>

<span class="field-name">Address1</span>

</label>

</fieldset>

<span class="field-name">Address2</span>

</label>

</fieldset>

</label>

</fieldset>

<span class="field-name">State/Region</span>

</label>

</fieldset>

</label>

</fieldset>

<span class="field-name">Country</span>

</label>

</fieldset>

<h4 class="bt_title">Credit Card Details</h4>

<?php if ($payment_method_details["is_pp_account"]) { ?>

<div style="float:left"> <img src="<?php echo $payment_method_details["imageUrl"] ?>" alt="PayPal" /> </div>

</div>

<?php } else { ?>

<div style="float:left; margin-left: 10px; margin-top:5px"> <b><?php echo $payment_method_details["cardType"] ?></b> <span style="color:#999">ending in <?php echo $payment_method_details["last2"] ?></span><br />

<span style="color:#999">Expires <?php echo $payment_method_details["expirationDate"] ?></span> </div>

</div>

<?php } ?>

</fieldset>

<span class="field-name">Amount</span>

</label>

</fieldset>

</form>

</div>

function verify_3d_secure()

{

var is_pp_account = "<?php echo $payment_method_details["is_pp_account"] ?>"; // check payment method is PayPal

if (is_pp_account != true)

{

var client = new braintree.api.Client({

clientToken: "<?php echo $clientToken; ?>"

});

client.verify3DS({

amount: $("#amount").val(),

creditCard: "<?php echo $bt_payment_method_nonce; ?>"

}, function (error, response) {

// Handle response

if (!error) {

// 3D Secure finished. Using response.nonce you may proceed with the transaction with the associated server side parameters below.

appendTo(document.forms.checkout, 'input', {name: 'payment_method_nonce', type: 'hidden', value: response.nonce});

document.forms.checkout.submit();

} else {

// Handle errors

console.log("Error :"+error.message);

}

});

}

else

{

document.forms.checkout.submit();

}

function appendTo($cont, childSelector, options)

{

var input = document.createElement(childSelector);

input.type = options.type;

input.name = options.name;

input.value = options.value;

$cont.appendChild(input);

};

</script>

</body>

</html>

Braintree Payment Gateway integration with 3D secure in Drop in-UI Example (Demo) :

<?php
// Braintree library
require 'braintree/lib/Braintree.php';

$params = array(
	"testmode"   => "on",
	"merchantid" => "xxxxxxx",
	"publickey"  => "xxxxxxx",
	"privatekey" => "xxxxxxxxxxxxxxxxxxxxx",
);

if ($params['testmode'] == "on")
{
	Braintree_Configuration::environment('sandbox');
}
else
{
	Braintree_Configuration::environment('production');
}

Braintree_Configuration::merchantId($params["merchantid"]);
Braintree_Configuration::publicKey($params["publickey"]);
Braintree_Configuration::privateKey($params["privatekey"]);

if(isset($_POST['payment_method_nonce']))
{
	// Customer details
	$customer_firstname   = $_POST['c_firstname'];
	$customer_lastname    = $_POST['c_lastname'];
	$customer_email       = $_POST['c_email'];
	$customer_phonenumber = $_POST['c_phonenumber'];
	// EOF Customer details

	// Customer billing details
	$firstname = $_POST['firstname'];
	$lastname  = $_POST['lastname'];
	$email     = $_POST['c_email'];
	$address1  = $_POST['address1'];
	$address2  = $_POST['address2'];
	$city      = $_POST['city'];
	$state     = $_POST['state'];
	$postcode  = $_POST['postcode'];
	$country   = $_POST['country'];
	$phone     = $_POST['c_phonenumber'];
	// EOF Customer billing details

	$sale = array(
				'amount'   => $_POST['amount'],
				'orderId'  => $_POST['invoiceid'],
				'paymentMethodNonce' => $_POST['payment_method_nonce'],   // Autogenerated field from braintree
				'customer' => array(
								'firstName' => $customer_firstname,
								'lastName'  => $customer_lastname,
								'phone'     => $customer_phonenumber,
								'email'     => $customer_email
							  ),
				'billing' => array(
								'firstName'         => $firstname,
								'lastName'          => $lastname,
								'streetAddress'     => $address1,
								'extendedAddress'   => $address2,
								'locality'          => $city,
								'region'            => $state,
								'postalCode'        => $postcode,
								'countryCodeAlpha2' => $country
							 ),
				'options' => array(
								'submitForSettlement'   => true,
								'storeInVaultOnSuccess' => true,
								'three_d_secure' => array('required' => true)
							 )
			);
						
	$result = Braintree_Transaction::sale($sale);
	if ($result->success)
	{
		echo "Braintree_cust_id : ".$braintree_cust_id = $result->transaction->_attributes['customer']['id']; // After first successfull transaction, save this Braintree_cust_id in DB and use for future transactions
	}
	else
	{
		echo "Error : ".$result->_attributes['message'];
	}
	
	print_r($result); exit;
}
else
if (isset($_POST['braintree_cust_id']))
{
	$sale = array(
				'customerId' => $braintree_cust_id,
				'amount'     => $_POST['amount'],
				'orderId'    => $_POST['invoiceid'],  // This field is get back in responce to track this transaction
				'options'    => array(
									'submitForSettlement' => true
								)
			);
}
else
if (isset($_POST['action']) && $_POST['action'] == 'generateclienttoken')
{
	//$braintree_cust_id = "31904842";
	// Generate the nonce and send it back
	try
	{
		$clientToken = Braintree_ClientToken::generate(array(
			// use customerId to get a previous customer from the vault
			// 'customerId' => $braintree_cust_id    // $braintree_cust_id is Fetch from DB
		));
	}
	catch(Exception $e)
	{
		// cannot get the customer from the vault!!
		$clientToken = Braintree_ClientToken::generate();
	}
	
	echo $clientToken; exit;
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Checkout</title>
</head>
<body>
<link href="style.css" type="text/css" rel="stylesheet" />
<h1 class="bt_title">Braintree Drop-in</h1>
<div class="dropin-page">
  <form id="checkout" method="post" action="">
    <h4 class="bt_title">Customer Information</h4>
    <input type="hidden" name="invoiceid" value="123456">
    <fieldset class="one_off_firstname">
      <label class="input-label" for="firstname">
      <span class="field-name">First Name</span>
      <input id="c_firstname" name="c_firstname" class="input-field card-field" type="text" placeholder="First Name" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_lastname">
      <label class="input-label" for="lastname">
      <span class="field-name">Last Name</span>
      <input id="c_lastname" name="c_lastname" class="input-field card-field" type="text" placeholder="Last Name" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_lastname">
      <label class="input-label" for="email">
      <span class="field-name">Email</span>
      <input id="c_email" name="c_email" class="input-field card-field" type="text" placeholder="Email" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_phonenumber">
      <label class="input-label" for="phonenumber">
      <span class="field-name">Phone Number</span>
      <input id="c_phonenumber" name="c_phonenumber" class="input-field card-field" type="text"placeholder="Phone Number" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <h4 class="bt_title">Customer Billing Information</h4>
    <fieldset class="one_off_firstname">
      <label class="input-label" for="firstname">
      <span class="field-name">First Name</span>
      <input id="firstname" name="firstname" class="input-field card-field" type="text" placeholder="First Name" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_lastname">
      <label class="input-label" for="lastname">
      <span class="field-name">Last Name</span>
      <input id="lastname" name="lastname" class="input-field card-field" type="text" placeholder="Last Name" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_address1">
      <label class="input-label" for="address1">
      <span class="field-name">Address1</span>
      <input id="address1" name="address1" class="input-field card-field" type="text" placeholder="Address" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_address2">
      <label class="input-label" for="address2">
      <span class="field-name">Address2</span>
      <input id="address2" name="address2" class="input-field card-field" type="text" placeholder="Address" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_city">
      <label class="input-label" for="city">
      <span class="field-name">City/Town</span>
      <input id="city" name="city" class="input-field card-field" type="text" placeholder="City/Town" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_state">
      <label class="input-label" for="state">
      <span class="field-name">State/Region</span>
      <input id="state" name="state" class="input-field card-field" type="text" placeholder="State/Region" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_postcode">
      <label class="input-label" for="postcode">
      <span class="field-name">Post Code</span>
      <input id="postcode" name="postcode" class="input-field card-field" type="text" placeholder="Post Code" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_country">
      <label class="input-label" for="country">
      <span class="field-name">Country</span>
      <input id="country" name="country" class="input-field card-field" type="text" placeholder="Country" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <h4 class="bt_title">Credit Card Details</h4>
    <div id="dropin">
      <div class="loader_container">
        <div>Loading...</div>
      </div>
    </div>
    <fieldset class="one_off_amount">
      <?php
                if(isset($_GET['amt'])) {
                    $amt = number_format((float)$_GET['amt'], 2, '.', '');
            ?>
      <h3>Your bill is for an amount of $ <?php echo $amt; ?></h3>
      <input type="hidden" name="amount" step="any" id="amount" value="<?php echo $amt; ?>" />
      <?php
                }else{
            ?>
      <label class="input-label" for="amount">
      <span class="field-name">Amount</span>
      <input id="amount" name="amount" class="input-field card-field" type="number" inputmode="numeric" placeholder="Amount" autocomplete="off" step="any">
      <div class="invalid-bottom-bar"></div>
      </label>
      <?php
                }
            ?>
    </fieldset>
    <div class="btn_container">
      <input type="submit" value="Make Payment" class="pay-btn">
      <span class="loader_img"></span> </div>
  </form>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script> 
<script src="https://js.braintreegateway.com/v2/braintree.js"></script> 
<!-- TO DO : Place below JS code in js file and include that JS file --> 
<script type="text/javascript">
(function() {
    
    var BTFn = {};
	var bt_client_token = '';

    BTFn.sendJSON = function($pay_btn) {

        $.ajax({
            dataType: "text",
            type: "POST",
            data:  { action: "generateclienttoken"},
            url: "braintree_dropin_with_3d_secure_demo.php",
            success: function (req) {
				bt_client_token = req;
                BTFn.initBT(req, $pay_btn);
            },
            error: function() {
            }
        });
    };

    BTFn.initBT = function(req, $pay_btn) {

        braintree.setup(
            req,
            'dropin', {
                container: 'dropin',
                onPaymentMethodReceived:function(obj){
                    
                    var client = new braintree.api.Client({
                        clientToken: bt_client_token
                    });

                    client.verify3DS({
                        amount: $('#amount').val(),
                        creditCard: obj.nonce
                    }, function (error, response) {
                        if (!error) {
                            // 3D Secure finished. send the response.nonce to server for further processing
                            BTFn.appendTo(document.forms.checkout, 'input', {name: 'payment_method_nonce', type: 'hidden', value: response.nonce});
                            document.forms.checkout.submit();
                        } else {
                            // Handle errors
                            alert("Error : "+error.message);
                        }
                    });
                },
                onReady:function(){
                    $('.loader_container').remove();
                },
                onError: function(error) {
                    $pay_btn.show().closest('.btn_container').find('.loader_img').hide();
                }
        });
    };

    BTFn.formValidate = function($form, $submit, $amount, $pay_btn) {

        var THIS = this;

        $submit.on('click', function(e) {

            $('.input-label .invalid-bottom-bar').removeClass('invalid');
            $(this).hide().closest('.btn_container').find('.loader_img').css('display', 'inline-block');
        });
    };

    BTFn.updateForm = function($form, link) {
        
        $form.attr('action', link);
        $('.one_off_amount, .monthly_amount').toggleClass('hide');
    };

    BTFn.appendTo = function($cont, childSelector, options) {

        var input = document.createElement(childSelector);
        input.type = options.type;
        input.name = options.name;
        input.value = options.value;
        $cont.appendChild(input);
    };

    $(document).ready(function() {

        $('.loader_container').find("div").show();

		var $form = $('#checkout'), $submit = $('#checkout input[type="submit"]'), $amount = $('input[name="amount"]'), $pay_btn = $('.pay-btn');

        BTFn.sendJSON($pay_btn);
        BTFn.formValidate($form, $submit, $amount, $pay_btn);
    });
})();

</script>
</body>
</html>

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<?php

// Braintree library

require 'braintree/lib/Braintree.php';

$params = array(

"testmode" => "on",

"merchantid" => "xxxxxxx",

"publickey" => "xxxxxxx",

"privatekey" => "xxxxxxxxxxxxxxxxxxxxx",

);

if ($params['testmode'] == "on")

{

Braintree_Configuration::environment('sandbox');

}

else

{

Braintree_Configuration::environment('production');

}

Braintree_Configuration::merchantId($params["merchantid"]);

Braintree_Configuration::publicKey($params["publickey"]);

Braintree_Configuration::privateKey($params["privatekey"]);

if(isset($_POST['payment_method_nonce']))

{

// Customer details

$customer_firstname = $_POST['c_firstname'];

$customer_lastname = $_POST['c_lastname'];

$customer_email = $_POST['c_email'];

$customer_phonenumber = $_POST['c_phonenumber'];

// EOF Customer details

// Customer billing details

$firstname = $_POST['firstname'];

$lastname = $_POST['lastname'];

$email = $_POST['c_email'];

$address1 = $_POST['address1'];

$address2 = $_POST['address2'];

$city = $_POST['city'];

$state = $_POST['state'];

$postcode = $_POST['postcode'];

$country = $_POST['country'];

$phone = $_POST['c_phonenumber'];

// EOF Customer billing details

$sale = array(

'amount' => $_POST['amount'],

'orderId' => $_POST['invoiceid'],

'paymentMethodNonce' => $_POST['payment_method_nonce'], // Autogenerated field from braintree

'customer' => array(

'firstName' => $customer_firstname,

'lastName' => $customer_lastname,

'phone' => $customer_phonenumber,

'email' => $customer_email

'billing' => array(

'firstName' => $firstname,

'lastName' => $lastname,

'streetAddress' => $address1,

'extendedAddress' => $address2,

'locality' => $city,

'region' => $state,

'postalCode' => $postcode,

'countryCodeAlpha2' => $country

'options' => array(

'submitForSettlement' => true,

'storeInVaultOnSuccess' => true,

'three_d_secure' => array('required' => true)

)

);

$result = Braintree_Transaction::sale($sale);

if ($result->success)

{

echo "Braintree_cust_id : ".$braintree_cust_id = $result->transaction->_attributes['customer']['id']; // After first successfull transaction, save this Braintree_cust_id in DB and use for future transactions

}

else

{

echo "Error : ".$result->_attributes['message'];

}

print_r($result); exit;

}

else

if (isset($_POST['braintree_cust_id']))

{

$sale = array(

'customerId' => $braintree_cust_id,

'amount' => $_POST['amount'],

'orderId' => $_POST['invoiceid'], // This field is get back in responce to track this transaction

'options' => array(

'submitForSettlement' => true

)

);

}

else

if (isset($_POST['action']) && $_POST['action'] == 'generateclienttoken')

{

//$braintree_cust_id = "31904842";

// Generate the nonce and send it back

try

{

$clientToken = Braintree_ClientToken::generate(array(

// use customerId to get a previous customer from the vault

// 'customerId' => $braintree_cust_id // $braintree_cust_id is Fetch from DB

));

}

catch(Exception $e)

{

// cannot get the customer from the vault!!

$clientToken = Braintree_ClientToken::generate();

}

echo $clientToken; exit;

}

<!DOCTYPE html>

<head>

<title>Checkout</title>

</head>

<body>

<h1 class="bt_title">Braintree Drop-in</h1>

<h4 class="bt_title">Customer Information</h4>

<span class="field-name">First Name</span>

</label>

</fieldset>

</label>

</fieldset>

<span class="field-name">Email</span>

</label>

</fieldset>

<span class="field-name">Phone Number</span>

</label>

</fieldset>

<h4 class="bt_title">Customer Billing Information</h4>

<span class="field-name">First Name</span>

</label>

</fieldset>

</label>

</fieldset>

<span class="field-name">Address1</span>

</label>

</fieldset>

<span class="field-name">Address2</span>

</label>

</fieldset>

</label>

</fieldset>

<span class="field-name">State/Region</span>

</label>

</fieldset>

</label>

</fieldset>

<span class="field-name">Country</span>

</label>

</fieldset>

<h4 class="bt_title">Credit Card Details</h4>

<div>Loading...</div>

</div>

<?php

if(isset($_GET['amt'])) {

$amt = number_format((float)$_GET['amt'], 2, '.', '');

<h3>Your bill is for an amount of $ <?php echo $amt; ?></h3>

<?php

}else{

<span class="field-name">Amount</span>

</label>

<?php

}

</fieldset>

</form>

</div>

(function() {

var BTFn = {};

var bt_client_token = '';

BTFn.sendJSON = function($pay_btn) {

$.ajax({

dataType: "text",

type: "POST",

data: { action: "generateclienttoken"},

url: "braintree_dropin_with_3d_secure_demo.php",

success: function (req) {

bt_client_token = req;

BTFn.initBT(req, $pay_btn);

error: function() {

}

});

};

BTFn.initBT = function(req, $pay_btn) {

braintree.setup(

req,

'dropin', {

container: 'dropin',

onPaymentMethodReceived:function(obj){

var client = new braintree.api.Client({

clientToken: bt_client_token

});

client.verify3DS({

amount: $('#amount').val(),

creditCard: obj.nonce

}, function (error, response) {

if (!error) {

// 3D Secure finished. send the response.nonce to server for further processing

BTFn.appendTo(document.forms.checkout, 'input', {name: 'payment_method_nonce', type: 'hidden', value: response.nonce});

document.forms.checkout.submit();

} else {

// Handle errors

alert("Error : "+error.message);

}

});

onReady:function(){

$('.loader_container').remove();

onError: function(error) {

$pay_btn.show().closest('.btn_container').find('.loader_img').hide();

}

});

};

BTFn.formValidate = function($form, $submit, $amount, $pay_btn) {

var THIS = this;

$submit.on('click', function(e) {

$('.input-label .invalid-bottom-bar').removeClass('invalid');

$(this).hide().closest('.btn_container').find('.loader_img').css('display', 'inline-block');

});

};

BTFn.updateForm = function($form, link) {

$form.attr('action', link);

$('.one_off_amount, .monthly_amount').toggleClass('hide');

};

BTFn.appendTo = function($cont, childSelector, options) {

var input = document.createElement(childSelector);

input.type = options.type;

input.name = options.name;

input.value = options.value;

$cont.appendChild(input);

};

$(document).ready(function() {

$('.loader_container').find("div").show();

var $form = $('#checkout'), $submit = $('#checkout input[type="submit"]'), $amount = $('input[name="amount"]'), $pay_btn = $('.pay-btn');

BTFn.sendJSON($pay_btn);

BTFn.formValidate($form, $submit, $amount, $pay_btn);

});

})();

</script>

</body>

</html>

Braintree – Payment Gateway integration with 3D secure (Hosted Fields) example

<?php
// Braintree library
require 'braintree/lib/Braintree.php';

$params = array(
	"testmode"   => "on",
	"merchantid" => "xxxxxxx",
	"publickey"  => "xxxxxxx",
	"privatekey" => "xxxxxxxxxxxxxxxxxxxxx",
);

if ($params['testmode'] == "on")
{
	Braintree_Configuration::environment('sandbox');
}
else
{
	Braintree_Configuration::environment('production');
}

Braintree_Configuration::merchantId($params["merchantid"]);
Braintree_Configuration::publicKey($params["publickey"]);
Braintree_Configuration::privateKey($params["privatekey"]);

if(isset($_POST['payment_method_nonce']))
{
	// Customer details
	$customer_firstname   = $_POST['c_firstname'];
	$customer_lastname    = $_POST['c_lastname'];
	$customer_email       = $_POST['c_email'];
	$customer_phonenumber = $_POST['c_phonenumber'];
	// EOF Customer details

	// Customer billing details
	$firstname = $_POST['firstname'];
	$lastname  = $_POST['lastname'];
	$email     = $_POST['c_email'];
	$address1  = $_POST['address1'];
	$address2  = $_POST['address2'];
	$city      = $_POST['city'];
	$state     = $_POST['state'];
	$postcode  = $_POST['postcode'];
	$country   = $_POST['country'];
	$phone     = $_POST['c_phonenumber'];
	// EOF Customer billing details

	$sale = array(
				'amount'   => $_POST['amount'],
				'orderId'  => $_POST['invoiceid'],
				'paymentMethodNonce' => $_POST['payment_method_nonce'],   // Autogenerated field from braintree
				'customer' => array(
								'firstName' => $customer_firstname,
								'lastName'  => $customer_lastname,
								'phone'     => $customer_phonenumber,
								'email'     => $customer_email
							  ),
				'billing' => array(
								'firstName'         => $firstname,
								'lastName'          => $lastname,
								'streetAddress'     => $address1,
								'extendedAddress'   => $address2,
								'locality'          => $city,
								'region'            => $state,
								'postalCode'        => $postcode,
								'countryCodeAlpha2' => $country
							 ),
				'options' => array(
								'submitForSettlement'   => true,
								'storeInVaultOnSuccess' => true,
								'three_d_secure' => array('required' => true)
							 )
			);
						
	$result = Braintree_Transaction::sale($sale);
	if ($result->success)
	{
		echo "Braintree_cust_id : ".$braintree_cust_id = $result->transaction->_attributes['customer']['id']; // After first successfull transaction, save this Braintree_cust_id in DB and use for future transactions
	}
	else
	{
		echo "Error : ".$result->_attributes['message'];
	}
	
	print_r($result); exit;
}
else
if (isset($_POST['braintree_cust_id']))
{
	$sale = array(
				'customerId' => $braintree_cust_id,
				'amount'     => $_POST['amount'],
				'orderId'    => $_POST['invoiceid'],  // This field is get back in responce to track this transaction
				'options'    => array(
									'submitForSettlement' => true
								)
			);
}
else
if (isset($_POST['action']) && $_POST['action'] == 'generateclienttoken')
{
	//$braintree_cust_id = "60033487";
	// Generate the nonce and send it back
	try
	{
		$clientToken = Braintree_ClientToken::generate(array(
			// use customerId to get a previous customer from the vault
			// 'customerId' => $braintree_cust_id    // $braintree_cust_id is Fetch from DB
		));
	}
	catch(Exception $e)
	{
		// cannot get the customer from the vault!!
		$clientToken = Braintree_ClientToken::generate();
	}
	
	echo $clientToken; exit;
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Braintree Hosted Fields Demo</title>
<link href="style.css" type="text/css" rel="stylesheet" />
</head>

<body>
<h1 class="bt_title">Braintree Hosted Fields Demo</h1>
<form id="bt_custom_form" name="bt_custom_form" method="post" action="">
  <div class="dropin-page">
    <h4 class="bt_title">Customer Information</h4>
    <input type="hidden" name="invoiceid" value="123456">
    <fieldset class="one_off_firstname">
      <label class="input-label" for="firstname">
      <span class="field-name">First Name</span>
      <input id="c_firstname" name="c_firstname" class="input-field card-field" type="text" placeholder="First Name" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_lastname">
      <label class="input-label" for="lastname">
      <span class="field-name">Last Name</span>
      <input id="c_lastname" name="c_lastname" class="input-field card-field" type="text" placeholder="Last Name" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_lastname">
      <label class="input-label" for="email">
      <span class="field-name">Email</span>
      <input id="c_email" name="c_email" class="input-field card-field" type="text" placeholder="Email" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_phonenumber">
      <label class="input-label" for="phonenumber">
      <span class="field-name">Phone Number</span>
      <input id="c_phonenumber" name="c_phonenumber" class="input-field card-field" type="text"placeholder="Phone Number" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <h4 class="bt_title">Customer Billing Information</h4>
    <fieldset class="one_off_firstname">
      <label class="input-label" for="firstname">
      <span class="field-name">First Name</span>
      <input id="firstname" name="firstname" class="input-field card-field" type="text" placeholder="First Name" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_lastname">
      <label class="input-label" for="lastname">
      <span class="field-name">Last Name</span>
      <input id="lastname" name="lastname" class="input-field card-field" type="text" placeholder="Last Name" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_address1">
      <label class="input-label" for="address1">
      <span class="field-name">Address1</span>
      <input id="address1" name="address1" class="input-field card-field" type="text" placeholder="Address" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_address2">
      <label class="input-label" for="address2">
      <span class="field-name">Address2</span>
      <input id="address2" name="address2" class="input-field card-field" type="text" placeholder="Address" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_city">
      <label class="input-label" for="city">
      <span class="field-name">City/Town</span>
      <input id="city" name="city" class="input-field card-field" type="text" placeholder="City/Town" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_state">
      <label class="input-label" for="state">
      <span class="field-name">State/Region</span>
      <input id="state" name="state" class="input-field card-field" type="text" placeholder="State/Region" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_postcode">
      <label class="input-label" for="postcode">
      <span class="field-name">Post Code</span>
      <input id="postcode" name="postcode" class="input-field card-field" type="text" placeholder="Post Code" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <fieldset class="one_off_country">
      <label class="input-label" for="country">
      <span class="field-name">Country</span>
      <input id="country" name="country" class="input-field card-field" type="text" placeholder="Country" autocomplete="off">
      <div class="invalid-bottom-bar"></div>
      </label>
    </fieldset>
    <h4 class="bt_title">Credit Card Details</h4>
  </div>
  <div class="loader_container">
    <div class="loader_img loader"></div>
  </div>
  <div class="bt_form_wrap hide invisible">
    <fieldset>
      <p class="amountDeclare">Amount to be paid 10.00 ($)</p>
      <input type="hidden" name="amount" id="amount" value="10" />
    </fieldset>
    <fieldset>
      <label for="bt_card_number">Card number</label>
      <div id="bt_card_number" class="inputFields"></div>
    </fieldset>
    <fieldset>
      <label for="bt_cvv">CVV</label>
      <div id="bt_cvv" class="inputFields"></div>
    </fieldset>
    <fieldset>
      <label for="bt_exp_date">Expiration date (MM/YY)</label>
      <div id="bt_exp_date" class="inputFields"></div>
    </fieldset>
    <div id="bt_paypal_container"></div>
    <div class="btn_container">
      <button class="pay-btn">Make Payment</button>
      <span class="loader_img"></span> </div>
  </div>
</form>
<script type="text/javascript" src="https://js.braintreegateway.com/js/beta/braintree-hosted-fields-beta.18.min.js"></script> 
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script> 
<!-- TO DO : Place below JS code in js file and include that JS file --> 
<script type="text/javascript">
	(function() {
    
		var BTFn = {};
		var bt_client_token = '';
	
		BTFn.sendJSON = function($obj) {
	
			$.ajax({
				dataType: "text",
				type: "POST",
				data: { action: "generateclienttoken"},
				url: "braintree_hosted_fields_with_3d_secure_demo.php",
				success: function (req) {
					bt_client_token = req;
					BTFn.initBT(req, $obj);
				},
				error: function() {
				}
			});
		};
	
		BTFn.initBT = function(req, $obj) {
	
			// we're on the custom fields tab
			braintree.setup(req, 'custom', {
				id: 'bt_custom_form',
				hostedFields: {
					number: {
						selector: '#bt_card_number'
					},
					cvv: {
						selector: '#bt_cvv'
					},
					expirationDate: {
						selector: '#bt_exp_date'
					}
				},
				onPaymentMethodReceived:function(obj){
                    
                    var client = new braintree.api.Client({
                        clientToken: bt_client_token
                    });

                    client.verify3DS({
                        amount: $('#amount').val(),
                        creditCard: obj.nonce
                    }, function (error, response) {
                        if (!error) {
                            // 3D Secure finished. send the response.nonce to server for further processing
                            BTFn.appendTo(document.forms.bt_custom_form, 'input', {name: 'payment_method_nonce', type: 'hidden', value: response.nonce});
                            document.forms.bt_custom_form.submit();
                        } else {
                            // Handle errors
                            alert("Error : "+error.message);
                        }
                    });
                },
				onReady: function() {
					BTFn.showBtForm();
				},
				onError: function(error) {
					BTFn.showFormErrors(error);
					$obj.show().closest('.btn_container').find('.loader_img').hide();
				},
				paypal:{
					container:'bt_paypal_container',
				}
			});
		};
	
		BTFn.showBtForm = function() {
	
			var eAnimation = this.detectAnimationEvent();
			$('.loader_container').addClass('fadeOut');
	
			$('.loader_container').one(eAnimation, function(event) {
				$('.loader_container').remove();
				$('.bt_form_wrap').removeClass('hide');
				$('.bt_form_wrap').addClass('fadeIn').removeClass('invisible');
			});
		};
	
		BTFn.detectAnimationEvent = function() {
	
			var t, el = document.createElement("fakeelement");
	
			var animations = {
				"animation"      : "animationend",
				"OAnimation"     : "oAnimationEnd",
				"MozAnimation"   : "animationend",
				"WebkitAnimation": "webkitAnimationEnd"
			}
	
			for (t in animations){
				if (el.style[t] !== undefined){
					return animations[t];
				}
			}
		};
	
		BTFn.showFormErrors = function(error) {
	
			var inputMap = {
				'number' : '#bt_card_number',
				'cvv' : '#bt_cvv',
				'expirationDate' : '#bt_exp_date'
			};
			if(!error.details) {
				$('.inputFields').addClass('inputError');
			}else{
				var i, errorLength = error.details.invalidFieldKeys.length;
				$('.inputFields').removeClass('inputError');
				for(var i=0; i < errorLength; i++) {
					$(inputMap[error.details.invalidFieldKeys[i]]).addClass('inputError');
				}
			}
		};

		BTFn.appendTo = function($cont, childSelector, options) {

			var input = document.createElement(childSelector);
			input.type = options.type;
			input.name = options.name;
			input.value = options.value;
			$cont.appendChild(input);
		};
	
		$(document).ready(function() {
	
			var $pay_btn = $('.pay-btn');
			BTFn.sendJSON($pay_btn);
			$pay_btn.on('click', function() {
				$(this).hide().closest('.btn_container').find('.loader_img').css('display', 'inline-block');
			});
		});
	})();
	</script>
</body>
</html>

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<?php

// Braintree library

require 'braintree/lib/Braintree.php';

$params = array(

"testmode" => "on",

"merchantid" => "xxxxxxx",

"publickey" => "xxxxxxx",

"privatekey" => "xxxxxxxxxxxxxxxxxxxxx",

);

if ($params['testmode'] == "on")

{

Braintree_Configuration::environment('sandbox');

}

else

{

Braintree_Configuration::environment('production');

}

Braintree_Configuration::merchantId($params["merchantid"]);

Braintree_Configuration::publicKey($params["publickey"]);

Braintree_Configuration::privateKey($params["privatekey"]);

if(isset($_POST['payment_method_nonce']))

{

// Customer details

$customer_firstname = $_POST['c_firstname'];

$customer_lastname = $_POST['c_lastname'];

$customer_email = $_POST['c_email'];

$customer_phonenumber = $_POST['c_phonenumber'];

// EOF Customer details

// Customer billing details

$firstname = $_POST['firstname'];

$lastname = $_POST['lastname'];

$email = $_POST['c_email'];

$address1 = $_POST['address1'];

$address2 = $_POST['address2'];

$city = $_POST['city'];

$state = $_POST['state'];

$postcode = $_POST['postcode'];

$country = $_POST['country'];

$phone = $_POST['c_phonenumber'];

// EOF Customer billing details

$sale = array(

'amount' => $_POST['amount'],

'orderId' => $_POST['invoiceid'],

'paymentMethodNonce' => $_POST['payment_method_nonce'], // Autogenerated field from braintree

'customer' => array(

'firstName' => $customer_firstname,

'lastName' => $customer_lastname,

'phone' => $customer_phonenumber,

'email' => $customer_email

'billing' => array(

'firstName' => $firstname,

'lastName' => $lastname,

'streetAddress' => $address1,

'extendedAddress' => $address2,

'locality' => $city,

'region' => $state,

'postalCode' => $postcode,

'countryCodeAlpha2' => $country

'options' => array(

'submitForSettlement' => true,

'storeInVaultOnSuccess' => true,

'three_d_secure' => array('required' => true)

)

);

$result = Braintree_Transaction::sale($sale);

if ($result->success)

{

}

else

{

echo "Error : ".$result->_attributes['message'];

}

print_r($result); exit;

}

else

if (isset($_POST['braintree_cust_id']))

{

$sale = array(

'customerId' => $braintree_cust_id,

'amount' => $_POST['amount'],

'orderId' => $_POST['invoiceid'], // This field is get back in responce to track this transaction

'options' => array(

'submitForSettlement' => true

)

);

}

else

if (isset($_POST['action']) && $_POST['action'] == 'generateclienttoken')

{

//$braintree_cust_id = "60033487";

// Generate the nonce and send it back

try

{

$clientToken = Braintree_ClientToken::generate(array(

// use customerId to get a previous customer from the vault

// 'customerId' => $braintree_cust_id // $braintree_cust_id is Fetch from DB

));

}

catch(Exception $e)

{

// cannot get the customer from the vault!!

$clientToken = Braintree_ClientToken::generate();

}

echo $clientToken; exit;

}

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<head>

<title>Braintree Hosted Fields Demo</title>

</head>

<body>

<h1 class="bt_title">Braintree Hosted Fields Demo</h1>

<h4 class="bt_title">Customer Information</h4>

<span class="field-name">First Name</span>

</label>

</fieldset>

</label>

</fieldset>

<span class="field-name">Email</span>

</label>

</fieldset>

<span class="field-name">Phone Number</span>

</label>

</fieldset>

<h4 class="bt_title">Customer Billing Information</h4>

<span class="field-name">First Name</span>

</label>

</fieldset>

</label>

</fieldset>

<span class="field-name">Address1</span>

</label>

</fieldset>

<span class="field-name">Address2</span>

</label>

</fieldset>

</label>

</fieldset>

<span class="field-name">State/Region</span>

</label>

</fieldset>

</label>

</fieldset>

<span class="field-name">Country</span>

</label>

</fieldset>

<h4 class="bt_title">Credit Card Details</h4>

</div>

</div>

<p class="amountDeclare">Amount to be paid 10.00 ($)</p>

</fieldset>

<label for="bt_card_number">Card number</label>

</fieldset>

</fieldset>

<label for="bt_exp_date">Expiration date (MM/YY)</label>

</fieldset>

<button class="pay-btn">Make Payment</button>

</div>

</form>

(function() {

var BTFn = {};

var bt_client_token = '';

BTFn.sendJSON = function($obj) {

$.ajax({

dataType: "text",

type: "POST",

data: { action: "generateclienttoken"},

url: "braintree_hosted_fields_with_3d_secure_demo.php",

success: function (req) {

bt_client_token = req;

BTFn.initBT(req, $obj);

error: function() {

}

});

};

BTFn.initBT = function(req, $obj) {

// we're on the custom fields tab

braintree.setup(req, 'custom', {

id: 'bt_custom_form',

hostedFields: {

number: {

selector: '#bt_card_number'

cvv: {

selector: '#bt_cvv'

expirationDate: {

selector: '#bt_exp_date'

}

onPaymentMethodReceived:function(obj){

var client = new braintree.api.Client({

clientToken: bt_client_token

});

client.verify3DS({

amount: $('#amount').val(),

creditCard: obj.nonce

}, function (error, response) {

if (!error) {

// 3D Secure finished. send the response.nonce to server for further processing

BTFn.appendTo(document.forms.bt_custom_form, 'input', {name: 'payment_method_nonce', type: 'hidden', value: response.nonce});

document.forms.bt_custom_form.submit();

} else {

// Handle errors

alert("Error : "+error.message);

}

});

onReady: function() {

BTFn.showBtForm();

onError: function(error) {

BTFn.showFormErrors(error);

$obj.show().closest('.btn_container').find('.loader_img').hide();

paypal:{

container:'bt_paypal_container',

}

});

};

BTFn.showBtForm = function() {

var eAnimation = this.detectAnimationEvent();

$('.loader_container').addClass('fadeOut');

$('.loader_container').one(eAnimation, function(event) {

$('.loader_container').remove();

$('.bt_form_wrap').removeClass('hide');

$('.bt_form_wrap').addClass('fadeIn').removeClass('invisible');

});

};

BTFn.detectAnimationEvent = function() {

var t, el = document.createElement("fakeelement");

var animations = {

"animation" : "animationend",

"OAnimation" : "oAnimationEnd",

"MozAnimation" : "animationend",

"WebkitAnimation": "webkitAnimationEnd"

}

for (t in animations){

if (el.style[t] !== undefined){

return animations[t];

}

};

BTFn.showFormErrors = function(error) {

var inputMap = {

'number' : '#bt_card_number',

'cvv' : '#bt_cvv',

'expirationDate' : '#bt_exp_date'

};

if(!error.details) {

$('.inputFields').addClass('inputError');

}else{

var i, errorLength = error.details.invalidFieldKeys.length;

$('.inputFields').removeClass('inputError');

for(var i=0; i < errorLength; i++) {

$(inputMap[error.details.invalidFieldKeys[i]]).addClass('inputError');

}

};

BTFn.appendTo = function($cont, childSelector, options) {

var input = document.createElement(childSelector);

input.type = options.type;

input.name = options.name;

input.value = options.value;

$cont.appendChild(input);

};

$(document).ready(function() {

var $pay_btn = $('.pay-btn');

BTFn.sendJSON($pay_btn);

$pay_btn.on('click', function() {

$(this).hide().closest('.btn_container').find('.loader_img').css('display', 'inline-block');

});

})();

</script>

</body>

</html>

You can download all above demos from below link :
Download Source Code

Browse source code in github : https://github.com/sagarsdeshmukh/Braintree_gateway_integration_demo_with_PHP

If you have any additional questions Or queries, don’t hesitate to let me know!, Just put comment below or contact @ my mail id sagarsdeshmukh@gmail.com

Happy coding!

Ref. Link : https://developers.braintreepayments.com/guides/3d-secure/overview
Test card details : https://developers.braintreepayments.com/guides/3d-secure/testing-go-live/php

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Braintree (PayPal) Payment gateway integration with 3D secure option in PHP

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