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<?php defined('SYSPATH') OR die('No direct access allowed.');
/**
* Captcha driver for "word" style.
*
* $Id: Word.php 3769 2008-12-15 00:48:56Z zombor $
*
* @package Captcha
* @author Kohana Team
* @copyright (c) 2007-2008 Kohana Team
* @license http://kohanaphp.com/license.html
*/
class Captcha_Word_Driver extends Captcha_Basic_Driver {
/**
* Generates a new Captcha challenge.
*
* @return string the challenge answer
*/
public function generate_challenge()
{
// Load words from the current language and randomize them
$words = Kohana::lang('captcha.words');
shuffle($words);
// Loop over each word...
foreach ($words as $word)
{
// ...until we find one of the desired length
if (abs(Captcha::$config['complexity'] - strlen($word)) < 2)
return strtoupper($word);
}
// Return any random word as final fallback
return strtoupper($words[array_rand($words)]);
}
} // End Captcha Word Driver Class
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