<?php
  /**
   * @link http://www.yiiframework.com/
   * @copyright Copyright (c) 2008 Yii Software LLC
   * @license http://www.yiiframework.com/license/
   */
  
  namespace app\commands;
  
  use yii\console\Controller;
  use yii\console\ExitCode;
  
  /**
   * This command echoes the first argument that you have entered.
   *
   * This command is provided as an example for you to learn how to create console commands.
   *
   * @author Qiang Xue <qiang.xue@gmail.com>
   * @since 2.0
   */
  class HelloController extends Controller
  {
      /**
       * This command echoes what you have entered as the message.
       * @param string $message the message to be echoed.
       * @return int Exit code
       */
      public function actionIndex($message = 'hello world')
      {
          echo $message . "
  ";
  
          return ExitCode::OK;
      }
  }