PayPal\Common\PPApiContext::setConfig PHP Method

    public function setConfig(array $config)
    {
        $this->config = PPConfigManager::getConfigWithDefaults($config);
        return $this;
    }

 /**
  *
  * @param string     $method        - API method to call
  * @param object     $requestObject Request object
  * @param apiContext $apiContext    object containing credential and SOAP headers
  * @param array      $handlers      Array of Handlers
  * @param mixed      $apiUserName   - Optional API credential - can either be
  *                                  a username configured in sdk_config.ini or a ICredential object created dynamically
  */
 public function call($port, $method, $requestObject, $apiContext, $handlers = array())
 {
     if (!is_array($handlers)) {
         $handlers = array();
     }
     if (is_array($this->handlers)) {
         $handlers = array_merge($this->handlers, $handlers);
     }
     if ($apiContext == null) {
         $apiContext = new PPApiContext(PPConfigManager::getConfigWithDefaults($this->config));
     }
     if ($apiContext->getConfig() == null) {
         $apiContext->setConfig(PPConfigManager::getConfigWithDefaults($this->config));
     }
     $service = new PPAPIService($port, $this->serviceName, $this->serviceBinding, $apiContext, $handlers);
     $ret = $service->makeRequest($method, new PPRequest($requestObject, $this->serviceBinding));
     $this->lastRequest = $ret['request'];
     $this->lastResponse = $ret['response'];
     return $this->lastResponse;
 }