i just do thses things nothing else….
1.
my contoller:

_helper->viewRenderer->setNoRender();
}

public function generatecaptchaAction()
{

//Let’s generate a totally random string using md5
$md5_hash = md5(rand(0,999));
//We don’t need a 32 character long string so we trim it down to 5
$security_code = substr($md5_hash, 15, 5);

$_SESSION['captcha_code'] = $security_code;

//Set the image width and height
$width = 100;
$height = 20;

//Create the image resource
$image = ImageCreate($width, $height);

//We are making three colors, white, black and gray
$white = ImageColorAllocate($image, 255, 255, 255);
$black = ImageColorAllocate($image, 0, 0, 0);
$grey = ImageColorAllocate($image, 204, 204, 204);

//Make the background black
ImageFill($image, 0, 0, $black);

//Add randomly generated string in white to the image
ImageString($image, 3, 30, 3, $security_code, $white);

//Throw in some lines to make it a little bit harder for any bots to break
ImageRectangle($image,0,0,$width-1,$height-1,$grey);
imageline($image, 0, $height/2, $width, $height/2, $grey);
imageline($image, $width/2, 0, $width/2, $height, $grey);

//Tell the browser what kind of file is come in
header(“Content-Type: image/jpeg”);

//Output the newly created image in jpeg format
ImageJpeg($image);
}
}

2: my view file:

3: my form:

Captcha Code:
<img src=”baseUrl();?>/imagegenerator/generatecaptcha” />
Enter Code Here:

PLEASE HELP ME GUYS…..I am not having Captcha image….and sumbit button not working????

Try to do a $_SESSION['captcha_code'] = NULL;

See if that works. If not, paste2.org your code and email me the link so that I can take a look at it.

Nice tutorial, thanks for sharing with us. I got it working. But the controller where I am using this is not recognizing the SESSION created in another (Image) controller.

I got this error:
Notice: Undefined index: captcha_code in C:\AppServ\www\super2\controllers\TestController.php on line 42

Can you please help me to solve this problem.

Thanks,
Jyotsna.

@Sudarshan You can disable layout this way: $this->_helper->layout->disableLayout();

Here in this code Header is defined like this
header(“Content-Type: image/jpeg”);
So it will might not give you the result
Try this header instead of :

$this->_response->setHeader(‘Content-Type’, ‘image/jpeg’);

I’m using ubuntu, so I get the package with:
sudo apt-get install php5-gd

and restarted my apache server:
sudo /etc/init.d/apache2 restart

and that’s it.

Thanks

How do I include this function?

Thanks

thanks

Instead of outputting the image, the Layout interferes with the HTML tags, etc. because the layout is parsed first before the action (the image) is rendered.