Return image from action controller

**joatack** · 06-28-2010, 08:17 AM

Hi all,

I tried from long time to return an image content from an action :

HTML :

Code:

<img src="user/loadavatar" />

Action :

Code:

class ImageController extends Zend_Controller_Action 
{
 
    function imageAction()
    {
	$this->_helper->layout->disableLayout();
        $this->_helper->viewRenderer->setNoRender();
		
    	$image = file_get_contents("test.png");
  	
	$this->getResponse()->clearBody ();
	$this->getResponse()->setHeader('Content-Type', 'image/png');
	$this->getResponse()->setBody($image); 
    }
}

When I called my action : http://localhost/skybook/image/image
-> Firefox display : "Image cannot be displayed because it contains errors"

If I try to put in a simple file test.php :

Code:

<?php
header("Content-Type: image/png");
echo file_get_contents('test.png');
?>

It works !!

I think something is added to my content when I want to pass via an action.....

Help !!!

Jo

**rbroen** · 06-28-2010, 09:21 AM

Your ImageController action worked on my machine, the only thing I changed was the image; I provided the absolute path to a png on my server. The image was provided when I requested

Code:

http://thedomain.com/controllername/image

**joatack** · 06-28-2010, 03:01 PM

:s

What can I do now, I am sure that the image I readed correctly because I can see the content but impossible to view the image....Do you think my bootstraap could be the cause ? (it could add some stupid things)......

Thx

**rbroen** · 06-29-2010, 07:11 AM

try a fresh zf project (like I did)
try a different png file
take a look at your apache error.log (an post it back here)

**joatack** · 06-29-2010, 09:21 AM

On clean project & different image & no error in apache log :

Code:

class ImageController extends Zend_Controller_Action 
{
 
    function imageAction()
    {
		$this->_helper->layout->disableLayout();
	    $this->_helper->viewRenderer->setNoRender();
	    
		$image = file_get_contents("test.jpg");
	  	
		$this->getResponse()->clearBody ();
		$this->getResponse()->clearAllHeaders();
		$this->getResponse()->setHeader('Content-Type', 'image/jpg',true);
		$this->getResponse()->setHeader('Cache-Control', 'public');
		$this->getResponse()->setBody($image); 
    }
}

Firefox put : http://localhost/test/image/image
IE put the content of the image, if I tried to save the content in jpg image file I cannot open it.....

Why it works if I call a simple php file but via an action it doesn't ?

**joatack** · 06-29-2010, 01:37 PM

I compared the original image and the generated image and there is 2 differences :

-> a small hexa code is added at the begining of content (0D 0A.......)
-> a smal hexa code is removed at the end of content (........00 3B
)

Why when I use an action, the content of the image is modified ?

**joatack** · 06-30-2010, 06:54 AM

Resolved, it was the empty line in my bootstraap, index and helpers.....

Don't use the end tag (?>) and remove all empty line at the end of files !

thx for help !

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