PaypalExpressCheckout

This simple wrapper builds, sends and interprets the commands sent too the Paypal Express Checkout API (NVP).

The current functionality is limited, but should allow you too:

• Fetch a payment token
• Take a payment
• Setup a payment subscription

Which is acheived by wrapping the following API 'requests':

• CreateRecurringPaymentsProfile
• DoExpressCheckoutPayment
• DoVoid
• GetExpressCheckoutDetails
• SetExpressCheckout

and any responses are placed into the 'Response' object, which can be queried for common information API information.

Reading List:

To understand how this paypal API works I would recommend reading the documentation, the following links should be useful:

• https://www.sandbox.paypal.com/home
• https://developer.paypal.com/webapps/developer/docs/classic/express-checkout/integration-guide/ECGettingStarted/
• Each request class has a link to the corresponding API documentation

Installation:

The library is PSR-0 compliant and the simplest way to install it is via composer, at the moment it isn't part of the main composer package library so it can be included by putting:

{
    "repositories": [
        {
            "type": "vcs",
            "url": "https://github.com/MMTDigital/PaypalExpressCheckout"
        }
    ],
    "require-dev": {
        "mmtdigital/paypalexpresscheckout": "master"
    }
}

into your composer.json.

Example:

Fetch an 'Express Checkout Token'

$exCheckout = new \PaypalExpressCheckout\Request\SetExpressCheckout();
$exCheckout ->setQueryParameter('RETURNURL', 'http://www.example.com/success.php')
            ->setQueryParameter('PAYMENT_REQUEST_0_NOTIFYURL', 'http://www.example.com/notify.php')
            ->setQueryParameter('CANCELURL', 'http://www.example.com/notify.php')

            ->setQueryParameter('L_BILLINGTYPE0', 'RecurringPayments')
            ->setQueryParameter('L_BILLINGAGREEMENTDESCRIPTION0', 'Re-occurring Payment for a subscription')

            ->setQueryParameter('L_PAYMENTREQUEST_0_AMT0', 24.00)
            ->setQueryParameter('L_PAYMENTREQUEST_0_NAME0', 'My Subscription')
            ->setQueryParameter('L_PAYMENTREQUEST_0_QTY0', 1)
            ->setQueryParameter('L_PAYMENTREQUEST_0_NUMBER0', 0)

            ->setQueryParameter('PAYMENTREQUEST_0_PAYMENTACTION', 'Sale')
            ->setQueryParameter('PAYMENTREQUEST_0_AMT', 24.00)
            ->setQueryParameter('PAYMENTREQUEST_0_CURRENCYCODE', 'GBP')
            ->setQueryParameter('PAYMENTREQUEST_0_DESC0', 'My product description')

            ->setUsername('sdk-three_api1.sdk.com')
            ->setPassword('QFZCWN5HZM8VBG7Q')
            ->setSignature('A-IzJhZZjhg29XQ2qnhapuwxIDzyAZQ92FRP5dqBzVesOkzbdUONzmOU');

if (!$exCheckout->isValid())
{
    throw new Exception('Missing Parameters: ' . implode(', ', $exCheckout->determineMissingFields()));
}

$paypalResponse = $exCheckout->send();