if ($photo->load(Yii::$app->request->post())) {
            $photo->photo = UploadedFile::getInstances($photo, 'photo');
            foreach($photo->photo as $ph){
                $name =  md5( $ph->baseName).'.'.$ph->extension;
                $ph->saveAs('uploads/' . $name );
                $ph->name = $name;
                $photo->photo = $ph;
                $photo->save();
            }
            return $this->redirect(['photo', 'id' => $model->id]); 
  
  //$_POST[POST_NAME][ROW][NAME];$_POST[POST_NAME][0][NAME];
$_POST[POST_NAME][1][NAME];
$_POST[POST_NAME][2][NAME];
//Далее расфасовуешь
foreach($_POST[POST_NAME]  as $query) {
if($model->load($query)) {
$model->save();
}
}