title: How to set the default controller in yii2
body: <p>I have <code>UserControler</code> and I run it in virtual server <a href="http://basic.com/index.php?r=user/index">http://basic.com/index.php?r=user/index</a>. How can I set up <code>UserController</code> and action <code>index</code> to be the default when I go to <a href="http://basic.com">http://basic.com</a>  </p>