How to get root directory in yii2

**yii2 Question**

My yii2 install in `d:\wamp\www\yii2store`

I want to get above path to save images which will be uploaded by me or users.

I have pass all available arguments in `Yii::getAlias('@webroot')` (below are the lists of argument which I have used).

`@yii` - framework directory.

`@app` - base path of currently running application.

`@runtime` - runtime directory.

`@vendor` - Composer vendor directory.

`@webroot` - web root directory of currently running web application.

`@web` - base URL of currently running web application.

And also once I will get above path to save images then how can I get path something like this `localhost/yiistore2/upload` to be use in img tag src.

One more thing how can I create my own alias with `Yii::setAlias()` and where to create this so that I can load it on every controller.

To get the base URL you can use this (would return "http:// localhost/yiistore2/upload")

Yii::app()->baseUrl

The following Code would return just "localhost/yiistore2/upload" without http[s]://

Yii::app()->getBaseUrl(true)


Or you could get the webroot path (would return "d:\wamp\www\yii2store")

Yii::getPathOfAlias('webroot')

Try out this,

My installation is at D:\xampp\htdocs\advanced

`\Yii::$app->basePath` will give like `D:\xampp\htdocs\advanced\backend`.

`\Yii::$app->request->BaseUrl` will give like `localhost\advanced\backend\web\`


You may store the image using `\Yii::$app->basePath` and show it using `\Yii::$app->request->BaseUrl`

Use "getAlias" in Yii2

\Yii::getAlias('@webroot')

Open below file `C:\xampp\htdocs\project\common\config\params-local.php`

Before your code:

<?php

return [


];

after your code:

<?php
yii::setAlias('@path1', 'localhost/foodbam/backend/web');

return [


];

Supposing you have a writable "uploads" folder in your application:

You can define a param like this:

Yii::$app->params['uploadPath'] = realpath(Yii::$app->basePath) . '/uploads/';

Then you can simply use the parameter as:

$path1 = Yii::$app->params['uploadPath'] . $filename;

Just depending on if you are using advanced or simple template the base path will be (following the [link](

[To see links please register here]

) provided by phazei):

> Simple @app: Your application root directory
>
> Advanced @app: Your application root directory (either frontend or
> backend or console depending on where you access it from)

This way the application will be more portable than using `realpath(dirname(__FILE__).'/../../'));`

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');

If you want to get the root directory of your yii2 project use, assuming that the name of your project is **project_app** you'll need to use:

echo Yii::getAlias('@app');

on windows you'd see "C:\dir\to\project_app"

on linux you'll get "/var/www/dir/to/your/project_app"

I was formally using:

echo Yii::getAlias('@webroot').'/..';

I hope this helps someone