Open file
D:\wamp\www\yiistore2\common\config\params-local.php
Paste below code before return
Yii::setAlias('@anyname', realpath(dirname(__FILE__).'/../../'));
After inserting above code in params-local.php file your file should look like this.
Yii::setAlias('@anyname', realpath(dirname(__FILE__).'/../../'));
return [
];
Now to get path of your root (in my case its D:\wamp\www\yiistore2
) directory you can use below code in any php file.
echo Yii::getAlias('@anyname');