]);
}

}
```
2. open file **common\config\main.php** add
 
 
```php 
...
 
    'bootstrap' => [
 
...
 
        'languageSwitcher',
 
...
 
    ],
 
...
 
...
 
    'components' => [
 
...
 
        'languageSwitcher' => [
 
            'class' => 'common\components\languageSwitcher',
 
        ],
 
...
 
    ],
 
...
 
```
 
3. open file **frontend\views\layouts\main.php** - add **use common\components\languageSwitcher;** - include widget in your layout by **<?= languageSwitcher::Widget() ?>** ภาษาไทย [YII 2 Widget เปลี่ยนภาษา](http://plusmagi.com/yii-2-widget-%E0%B9%80%E0%B8%9B%E0%B8%A5%E0%B8%B5%E0%B9%88%E0%B8%A2%E0%B8%99%E0%B8%A0%E0%B8%B2%E0%B8%A9%E0%B8%B2/ "YII 2 Widget เปลี่ยนภาษา ")