PHP client API to access Gravity Research and Developments, for documentation please refer to this link.
Preferred installation is with composer:
$ composer require gravityrd/php-client
Without composer:
<?php
require 'path/to/GravityClient.php';
use Gravity\GravityClient;
use Gravity\GravityClientConfig;
$client = new GravityClient(new GravityClientConfig());
For development please use composer with development dependencies.