Gr4vy SDK for PHP

Gr4vy provides any of your payment integrations through one unified API. For more details, visit gr4vy.com.

Installation

The Gr4vy PHP SDK can be installed via Composer.

composer require gr4vy/gr4vy-php

Getting Started

To make your first API call, you will need to request a Gr4vy instance to be set up. Please contact our sales team for a demo.

Once you have been set up with a Gr4vy account you will need to head over to the Integrations panel and generate a private key. We recommend storing this key in a secure location but in this code sample we simply read the file from disk.

<?php
require __DIR__ . '/../vendor/autoload.php';

$privateKeyLocation = __DIR__ . "/private_key.pem";

$config = new Gr4vy\Gr4vyConfig("[YOUR_GR4VY_ID]", $privateKeyLocation);

try {
    $result = $config->listBuyers();
    print_r($result);
} catch (Exception $e) {
    echo 'Exception when calling listBuyers: ', $e->getMessage(), PHP_EOL;
}

Environment

The SDK defaults the environment to "sandbox", to send transactions to production, set the environment in Gr4vyConfig:

$config = new Gr4vy\Gr4vyConfig("[YOUR_GR4VY_ID]", $privateKeyLocation, false, "sandbox");

$config = new Gr4vy\Gr4vyConfig("[YOUR_GR4VY_ID]", $privateKeyLocation, false, "production");

Gr4vy Embed

To create a token for Gr4vy Embed, call the config->getEmbedToken() function with the amount, currency, optional buyer information and optional checkout session for Gr4vy Embed.

//A checkout session allows multiple transaction attempts to be tied together
$checkoutSession = $config->newCheckoutSession();

echo $config->getEmbedToken(
  array(
    "amount"=> 200,
    "currency" => "USD",
    "buyer_id"=> "d757c76a-cbd7-4b56-95a3-40125b51b29c"
  ), 
  $checkoutSession["id"]
);

Or, generate a checkout session and Embed Token with a single call:

echo $config->getEmbedTokenWithCheckoutSession(
  array(
    "amount"=> 200,
    "currency" => "USD",
    "buyer_id"=> "d757c76a-cbd7-4b56-95a3-40125b51b29c"
  )
);

You can now pass this token to your front end where it can be used to authenticate Gr4vy Embed.

The buyerId and buyerExternalIdentifier fields can be used to allow the token to pull in previously stored payment methods for a user. A buyer needs to be created before it can be used in this way.

$config = new Gr4vy\Gr4vyConfig("[YOUR_GR4VY_ID]", $privateKeyLocation);

$buyer_request = array("external_identifier"=>"412231123","display_name"=>"Tester T.");
$buyer = $config->addBuyer($buyer_request);

$embed = array("amount"=> 200, "currency" => "USD", "buyer_id"=> $buyer["id"]);
$embedToken = $config->getEmbedToken($embed);

Checkout Sessions

A checkout session can be used across Embed sessions to track retries or shopping cart updates. To achieve this the same checkoutSessionId can be used in multiple getEmbedToken calls.

NOTE: a checkout session is valid for 1h from creation.

$config->getEmbedToken(
  array(
    "amount"=> 200,
    "currency" => "USD",
    "buyer_id"=> "d757c76a-cbd7-4b56-95a3-40125b51b29c"
  ), 
  $storedCheckoutSessionId
);

Initialization

The client can be initialized with the Gr4vy ID (gr4vyId) and the private key.

$config = new Gr4vy\Gr4vyConfig("acme", $privateKeyLocation);

Alternatively, you can set the host of the server to use directly.

$config = new Gr4vy\Gr4vyConfig("acme", $privateKeyLocation);
$config->setHost("https://api.acme.gr4vy.app");

Your API key can be created in your admin panel on the Integrations tab.

Multi merchant

In a multi-merchant environment, the merchant account ID can be set by passing merchantAccountId to the Config:

$config = new Gr4vy\Gr4vyConfig("[YOUR_GR4VY_ID]", $privateKeyLocation, false, "sandbox", "default");

$config = new Gr4vy\Gr4vyConfig("[YOUR_GR4VY_ID]", $privateKeyLocation, false, "sandbox", "my_merchant_account_id");

Making API calls

This library conveniently maps every API path to a seperate function. For example, GET /buyers?limit=100 would be:

$result = $config->listBuyers(100);

To create or update a resource an array should be sent with the request data.

$buyer_request = array("external_identifier"=>"412231123","display_name"=>"Tester T.");
$buyer = $config->addBuyer($buyer_request);

Similarly, to update a buyer you will need to pass in the BuyerUpdateRequest.

$buyer_update = array("external_identifier"=>"testUpdateBuyer");
$result = $config->updateBuyer($result["id"], $buyer_update);

Generate API bearer token

The SDK can be used to create API access tokens for use with other request libraries.

$bearerToken = Gr4vyConfig::getToken($privateKeyLocation, array("*.read", "*.write"))->toString();

The first parameter is the location of your private key. The second parameter is an array of scopes for the token.

The resulting token can be used as a bearer token in the header of the HTTP request made to the API.

Authorization: Bearer <bearerToken>

Logging & Debugging

The SDK makes it easy possible to the requests and responses to the console.

$debugging = true;
$config = new Gr4vyConfig(self::$gr4vyId, self::$privateKeyLocation, $debugging);

This will print debug output for the request to the console.

Development

Tests

To run the tests, store a private key for the spider environment and then run the following commands.

composer install
./vendor/bin/phpunit test/

Publishing

Publishing of this project is done through Packagist. New versions are released by creating a new Git tag.

License

This library is released under the MIT License.