37 lines
962 B
PHP
37 lines
962 B
PHP
<?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
|