When I upload the different pixels .its not displaying the exact circular shape.it become oval shape.but when i upload square shaped picture its exact circular shape
<div class="profile_pic">
                           <?php 
                             $model = SimUser::find()->where(['user_id' => Yii::$app->user->identity->user_id])->one();
                           if ($model->user_profile_image != null) { ?>
                                        <img src="<?= Files::getFilePath($model->user_profile_image, true); ?>"  class ="img-circle profile_img  img-responsie " />
                                    <?php } else { ?>
                                       <?= Html::img(\Yii::$app->request->BaseUrl . '/web/images/user.png', ['class' => 'img-circle profile_img', 'alt' => '...']); ?>
                                     <?php } ?>
                    </div>
how can i make the image to circular shape if it different pixels also
 
     
     
     
    