Administrator / test_1

  <?php
  namespace app\models;
  
  use yii\base\Model;
  use yii\web\UploadedFile;
  
  /**
   * UploadForm is the model behind the upload form.
   */

  class UploadFileParsingForm extends Model

  {
      /**
       * @var UploadedFile file attribute
       */
      public $file;
  
      /**
       * @return array the validation rules.
       */
      public function rules()
      {
          return [

              [['file'], 'file', ] //'extensions' => ['csv', 'xml'] ],

          ];
      }
  }