Zend_Config::get PHP Method

    public function get($name, $default = null)
    {
        $result = $default;
        if (array_key_exists($name, $this->_data)) {
            $result = $this->_data[$name];
        }
        return $result;
    }

 /**
  * @param $databaseConfig
  * @param $masterParams
  * @return array
  */
 private function mapSlavesConfig(Zend_Config $databaseConfig, $masterParams)
 {
     $slaves = $databaseConfig->get('slaves');
     if (!$slaves || !$slaves instanceof Zend_Config || $slaves->count() === 0) {
         $slaves = array();
     }
     $slavesParams = array();
     foreach ($slaves as $slaveId) {
         $slaveConfig = $databaseConfig->get($slaveId);
         if (!$slaveConfig || !$slaveConfig instanceof Zend_Config) {
             $this->logger->warning(sprintf("Listed slave '%s' has no configuration. Skipping candidate slave.", $slaveId));
             continue;
         }
         $slaveParams = $this->getParamsFromConfig($slaveConfig);
         if ($slaveParams['driver'] !== $masterParams['driver']) {
             $this->logger->warning(sprintf("Listed slave '%s' has different driver ('%s') than master ('%s'). This is not supported. " . 'Skipping candidate slave.', $slaveId, $slaveParams['driver'], $masterParams['driver']));
             continue;
         }
         $slavesParams[] = $slaveParams;
     }
     if (empty($slavesParams)) {
         $this->logger->warning('No (properly) configured slaves, using master as slave.');
         $slavesParams[] = $masterParams;
     }
     return $slavesParams;
 }