framework/console/Application.php
public function runAction($route, $params = [])
    {
        try {
            $res = parent::runAction($route, $params);
            return is_object($res) ? $res : (int) $res;
        } catch (InvalidRouteException $e) {
            throw new UnknownCommandException($route, $this, 0, $e);
        }
    }
public function runAction($route, $params = [])
    {
        try {
            $res = parent::runAction($route, $params);
            return is_object($res) ? $res : (int) $res;
        } catch (InvalidRouteException $e) {
            throw new UnknownCommandException($route, $this, 0, $e);
        }
    }
Runs a controller action specified by a route.
This method parses the specified route and creates the corresponding child module(s), controller and action
instances. It then calls [[Controller::runAction()]] to run the action with the given parameters.
If the route is empty, the method will use [[defaultRoute]].

For example, to run `public function actionTest($a, $b)` assuming that the controller has options the following
code should be used:

```php
\Yii::$app->runAction('controller/test', ['option' => 'value', $a, $b]);
```

@param string $route the route that specifies the action.
@param array $params the parameters to be passed to the action
@return int|Response the result of the action. This can be either an exit code or Response object.
Exit code 0 means normal, and other values mean abnormal. Exit code of `null` is treaded as `0` as well.
@throws Exception if the route is invalid