Credit card as Value Object

Installation

You can install this library using Composer

Information about how to install composer you can find here

Command line

In root directory of your project run through a console:

$ composer require "larium/credit-card":"@stable"

Composer.json

Include require line in your composer.json file

{
	"require": {
    	"larium/credit-card": "@stable"
    }
}

and run from console in the root directory of your project:

$ composer update

After this you must require autoload file from composer.

<?php
require_once 'vendor/autoload.php';

Usage

Creating a credit card object

<?php
use Larium\CreditCard\CreditCard;
use Larium\CreditCard\CreditCardValidator;

require_once 'vendor/autoload.php';

$data = array(
    'holderName'=> 'John Doe',
    'month'     => 1,
    'year'      => date('Y') + 1,
    'brand'     => CreditCard::VISA,
    'number'    => '4532875311640795',
    'cvv'       => '123',
);

$card = new CreditCard($data);

echo $card->getBrand(); # visa
//Auto uppercase holder name.
echo $card->getHolderName(); # JOHN DOE

$card = $card->withNumber('5284911033259148');
echo $card->getBrand(); # master

Adding a token in credit card object

<?php
use Larium\CreditCard\CreditCard;
use Larium\CreditCard\CreditCardValidator;
use Larium\CreditCard\Token;

require_once 'vendor/autoload.php';

$data = array(
    'holderName' => 'John Doe',
    'month'     => 1,
    'year'      => date('Y') + 1,
    'brand'     => CreditCard::VISA,
    'number'    => '4532875311640795',
    'cvv'       => '123',
);

$card = new CreditCard($data);

# ... use credit card to obtain a token reference from a remote payment gateway.

$token = new Token('0123456789');

$card = $card->withToken($token);

# Now, credit card will use token for future payments
# and will mask any sensitive data as number and cvv.
echo $card->getCvv(); # null
echo $card->getNumber(); # XXXX-XXXX-XXXX-0795
echo $card->getToken(); # 0123456789

In some cases we need to use a temporary token to fulfil a payment. Many payment gateways support a limited time token, which represents a card or a payment method.

<?php
use Larium\CreditCard\Token;

require_once 'vendor/autoload.php';

$token = new Token('0123456789', new DateTime('15 minutes'));
$token->isExpired() # false

$token = new Token('0123456789', new DateTime('15 minutes ago'));
$token->isExpired() # true

Validating a credit card

use Larium\CreditCard\CreditCard;
use Larium\CreditCard\CreditCardValidator;

require_once 'vendor/autoload.php';

$data = array(
    'holderName'=> 'John Doe',
    'month'     => 1,
    'year'      => date('Y') + 1,
    'brand'     => CreditCard::VISA,
    'number'    => '4532875311640795',
    'cvv'       => '123',
);

$card = new CreditCard($data);

$validator = new CreditCardValidator();
$errors = $validator->validate($card);
$valid = count($errors) === 0; # true

$card = $card->withNumber('1');
$error = $validator->validate($card);

print_r($errors);
/*
Array
(
    [number] => not a valid number
    [brand] => not valid card type
)
*/

Validating a token of a credit card

<?php

use Larium\CreditCard\CreditCard;
use Larium\CreditCard\CreditCardValidator;
use Larium\CreditCard\Token;

require_once 'vendor/autoload.php';

$card = new CreditCard();
$token = new Token('0123456789');
$card = $card->withToken($token);
$validator = new CreditCardValidator(CreditCardValidator::CONTEXT_TOKEN);
$errors = $validator->validate($card);
$valid = count($errors) === 0; # true

$token = new Token('0123456789', new DateTime('15 minutes ago'));
$card = $card->withToken($token);
$validator->setContext(CreditCardValidator::CONTEXT_TOKEN);
$validator->validate($card);
$validator->getErrors();
/*
Array
(
    [token] => token has been expired
)
*/