This is my question I asked on forum and it works for me
https://forum.yiiframework.com/t/multiple-file-uploading-api-in-yii2/130519

Implement this code in model for **Multiple File Uploading**

 
```php
public function rules()
{];
}
```
 
y    
 
```
 
 
 
You can add extension or any skiponempty method also in model. And this is my controller action where I performed multiple file uploading code.
 
 

```php
public function actionMultiple(){```


 
If any query or question I will respond.