Comments on: A Zend_Captcha example

By: vietanhit

vietanhit — Fri, 17 Jul 2009 20:00:57 +0000

I’ve solved the problem, replace

‘font’ => $baseUrl . ‘/img/arial.ttf’,
‘imgDir’ => $baseUrl . ‘/img/’,
‘imgUrl’ => ‘http://project.com/captcha/’,

with this:

‘font’ => “./img/arial.ttf”,
‘imgdir’ => “./img”,
‘imgurl’ => “./img”

Don’t want to use $baseUrl .
Thanks this tutorial ! :)

By: vietanhit

vietanhit — Fri, 17 Jul 2009 11:42:55 +0000

I use “arial.ttf” font, put it in public/img folder:

$baseUrl = Zend_Controller_Front::getInstance()->getBaseUrl();
// Our form object…
$form = new Zend_Form();
// And here’s our captcha object…
$captcha = new Zend_Form_Element_Captcha(
‘captcha’, // This is the name of the input field
array(‘label’ => ‘Write the chars to the field’,
‘captcha’ => array( // Here comes the magic…
// First the type…
‘captcha’ => ‘Image’,
// Length of the word…
‘wordLen’ => 6,
// Captcha timeout, 5 mins
‘timeout’ => 300,
// What font to use…
‘font’ => $baseUrl . ‘/img/arial.ttf’,
// Where to put the image
‘imgDir’ => $baseUrl . ‘/img/’,
// URL to the images
// This was bogus, here’s how it should be… Sorry again :S
‘imgUrl’ => ‘http://project.com/captcha/',
)));

By: vietanhit

vietanhit — Fri, 17 Jul 2009 11:36:41 +0000

getting these errors (ZF 1.8.4):

Warning: imageftbbox() [function.imageftbbox]: Invalid font filename in C:\wamp\www\Zend_Framework\zf_captcha\library\Zend\Captcha\Image.php on line 489

Warning: imagefttext() [function.imagefttext]: Invalid font filename in C:\wamp\www\Zend_Framework\zf_captcha\library\Zend\Captcha\Image.php on line 492

Warning: imagepng() [function.imagepng]: Unable to open ‘/Zend_Framework/zf_captcha/public/img/ffa6e2ec474d49875ff2b131806c704c.png’ for writing: No such file or directory in C:\wamp\www\Zend_Framework\zf_captcha\library\Zend\Captcha\Image.php on line 563

By: slawek

slawek — Wed, 10 Jun 2009 23:29:21 +0000

Great tutorial – thank you.
I have one problem – when I refresh my page after giving wrong captcha code I get following error: “Notice: Undefined index: word in E:\program\www\myapp\application\controllers\IndexController.php”
I tryied to fix it with “try” but it doesn’t work. Any ideas to solve this annoying problem. Gretz.

By: igor

igor — Sun, 07 Jun 2009 19:56:45 +0000

Used your example on my site, but getting only the background with dots and lines, no text. Here’s the code

$captcha = new Zend_Form_Element_Captcha(‘captcha’, array(
‘label’ => ‘Prove you are human:’,
‘captcha’ => array(
‘captcha’ => ‘Image’,
‘wordlen’ => 6,
‘timeout’ => 300,
‘font’ => $_SERVER['DOCUMENT_ROOT'] . ‘/zf_whitenet/public/fonts/arial.ttf’,
‘imgDir’ => ‘captcha’,
‘imgUrl’ => ‘http://localhost/zf_whitenet/public/captcha‘)));

$this->addElement($captcha);

By: Jan Viehweger

Jan Viehweger — Wed, 22 Apr 2009 15:12:19 +0000

thanx for the good example!!!

@Anees
I’ve had the same error. I could fix it by making a new instance of Zend_Captcha_Image. Look at my workaround:

public function indexAction()
{
// Our form object…
$form = new Zend_Form();
// And here’s our captcha object…

$captchaImage = new Zend_Captcha_Image(array(
‘wordLen’ => 6,
// Captcha timeout, 5 mins
‘timeout’ => 300,
// What font to use…
‘font’ => ‘/path/to/font/FontName.ttf’,
// Where to put the image
‘imgDir’ => ‘/var/www/project/public/captcha/’,
// URL to the images
‘imgUrl’ => ‘http://project.com/captcha/‘
));

$captchaElement = new Zend_Form_Element_Captcha(
‘captcha’, // This is the name of the input field
array(‘label’ => ‘Write the chars to the field’,
‘captcha’ => $captchaImage));

// Add the captcha element to the form…
$form->setAction(‘/captcha/captcha/’)
->setMethod(‘post’)
// Add the captcha to the form…
->addElement($captchaElement)
->addElement(‘submit’,'Submit’);
// Pass the form to the view…
$this->view->form = $form;
}

hope this helps …

jan

By: Ron

Ron — Fri, 20 Mar 2009 00:09:30 +0000

That Zend stuff always confused me lol. Thanks for this clearly laid out and excellent tutorial. Noobs like me really really appreciate this kind of stuff. It makes me feel thankful that the internet exists because otherwise where the hell would I get the little tidbits I need now and again. Thanks again Robert.

Ron

By: dude

dude — Thu, 19 Mar 2009 12:14:51 +0000

thanks alot ! now it works like a charm

By: Serega

Serega — Thu, 19 Mar 2009 08:17:00 +0000

Good example!!!! A lot of thanx to you!!!!

By: Charlie

Charlie — Tue, 17 Mar 2009 15:59:05 +0000

I had some hassle getting Zend to work with my PHP setup but once that worked, I managed to follow this tutorial in no time! My new app is now captcha-fied!