/** * Constructor * * @param string $merchantId Merchant ID * @param string $apiKey API Access Passcode * @param string $platform API Platform (default 'www') * @param string $version API Version (default 'v1') */ public function __construct($merchantId = '', $apiKey, $platform, $version) { //set configs $this->_config = new Configuration(); $this->_config->setMerchantId($merchantId); $this->_config->setApiKey($apiKey); $this->_config->setPlatform($platform); $this->_config->setApiVersion($version); }