The recommended way to install Renderforest SDK for PHP is through Composer.
# Install Composer
curl -sS https://getcomposer.org/installer | php
Next, run the Composer command to install the latest stable version of Renderforest SDK for PHP:
php composer.phar require renderforest/sdk-php
After installing, you need to require Composer's autoloader:
require 'vendor/autoload.php';