Yii 2.0 comes with a formatter component to format dates, numbers, and other values for international users according to their locale. This is very useful for displaying data. When working with incoming data or when using enhanced input methods like the [MaskedInput widget](https://www.yiiframework.com/doc/api/2.0/yii-widgets-maskedinp...
common\components\LanguageSelector.php
<?php
namespace common\components;
Yii comes with internationalisation (i18n) "out of the box". There are instructions in the manual as to how to configure Yii to use i18n, but little information all in one place on how to fully integrate it into the bootstrap menu. This document attempts to remedy that.
You would find having such a need in most Yii Projects. Your database needs a specific format to store date fields, while you may want to display it in different formats to the users on forms and other views.