Why imagecreatefromjpeg does not work in yii framework?

I do so without a framework:

Image.php


header('Content-Type: image/jpeg');

$imagem = imagecreatefromjpeg($_GET['image']);


// resize...


echo imagejpeg($image);

Index.php




<div>

<img src="image.php?image=path/image.jpg" />

</div>



The question is, how to do this in yii? Without using extensions, just a simple example.

Thanks

Solved;

Controller


        public function actionDisplaySavedImage()

        {

            header('Content-Type: image/jpeg');

            $imagem = imagecreatefromjpeg('10_123-DOURADO.jpg');

            print imagejpeg($imagem);

            exit(); 

        }



View




<?php

echo CHtml::image( Yii::app()->controller->createUrl('imagem/displaysavedimage') );

?>