Zephir\BaseBackend::getActiveBackend PHP Method

    public static function getActiveBackend()
    {
        if (version_compare(phpversion(), '7.0', '>=')) {
            return 'ZendEngine3';
        }
        return 'ZendEngine2';
    }

 /**
  * Executes the command
  * @param Config $config
  * @param Logger $logger
  */
 public function execute(Config $config, Logger $logger)
 {
     $params = $this->parseArguments();
     $backend = null;
     if (!isset($params['backend'])) {
         $params['backend'] = BaseBackend::getActiveBackend();
     }
     $className = 'Zephir\\Backends\\' . $params['backend'] . '\\Backend';
     if (!class_exists($className)) {
         throw new \InvalidArgumentException('Backend ' . $params['backend'] . ' does not exist');
     }
     $backend = new $className();
     $compiler = new Compiler($config, $logger, $backend);
     $command = $this->getCommand();
     $compiler->{$command}($this);
 }