Subversion-Projekte lars-tiefland.php_share

Revision

Details | Letzte Änderung | Log anzeigen | RSS feed

Revision Autor Zeilennr. Zeile
1 lars 1 
<?php
2 
/**
3 
 * Text_CAPTCHA_Driver_Word - Text_CAPTCHA driver word CAPTCHAs
4 
 *
5 
 * Class to create a textual Turing test
6 
 *
7 
 * @author  Tobias Schlitt <schlitt@php.net>
8 
 * @author  Christian Wenz <wenz@php.net>
9 
 * @license BSD License
10 
 */
11 
 
12 
/**
13 
 *
14 
 * Require Numbers_Words class for generating the text.
15 
 *
16 
 */
17 
require_once 'Text/CAPTCHA.php';
18 
require_once 'Numbers/Words.php';
19 
 
20 
class Text_CAPTCHA_Driver_Word extends Text_CAPTCHA
21 
{
22 
 
23 
    /**
24 
     * Phrase length
25 
     *
26 
     * This variable holds the length of the Word
27 
     *
28 
     * @access private
29 
     */
30 
    var $_length;
31 
 
32 
    /**
33 
     * Numbers_Words mode
34 
     *
35 
     * This variable holds the mode for Numbers_Words
36 
     *
37 
     * @access private
38 
     */
39 
    var $_mode;
40 
 
41 
    /**
42 
     * Locale
43 
     *
44 
     * This variable holds the locale for Numbers_Words
45 
     *
46 
     * @access private
47 
     */
48 
    var $_locale;
49 
 
50 
    /**
51 
     * init function
52 
     *
53 
     * Initializes the new Text_CAPTCHA_Driver_Word object
54 
     *
55 
     * @param array $options CAPTCHA options with these keys:
56 
     *               phrase  The "secret word" of the CAPTCHA
57 
     *               length  The number of characters in the phrase
58 
     *               locale  The locale for Numbers_Words
59 
     *               mode    The mode for Numbers_Words
60 
     *
61 
     * @access public
62 
     */
63 
    function init($options = array())
64 
    {
65 
        if (isset($options['length']) && is_int($options['length'])) {
66 
            $this->_length = $options['length'];
67 
        } else {
68 
            $this->_length = 4;
69 
        }
70 
        if (isset($options['phrase']) && !empty($options['phrase'])) {
71 
            $this->_phrase = (string)(int)$options['phrase'];
72 
        } else {
73 
            $this->_createPhrase();
74 
        }
75 
        if (isset($options['mode']) && !empty($options['mode'])) {
76 
            $this->_mode = $options['mode'];
77 
        } else {
78 
            $this->_mode = 'single';
79 
        }
80 
        if (isset($options['locale']) && !empty($options['locale'])) {
81 
            $this->_locale = $options['locale'];
82 
        } else {
83 
            $this->_locale = 'en_US';
84 
        }
85 
    }
86 
 
87 
    /**
88 
     * Create random CAPTCHA phrase, "Word edition" (numbers only)
89 
     *
90 
     * This method creates a random phrase
91 
     *
92 
     * @access  private
93 
     */
94 
    function _createPhrase()
95 
    {
96 
        $this->_phrase = (string)Text_Password::create($this->_length, 'unpronounceable', 'numeric');
97 
    }
98 
 
99 
    /**
100 
     * Return CAPTCHA as a string
101 
     *
102 
     * This method returns the CAPTCHA as string
103 
     *
104 
     * @access  public
105 
     * @return  text        string
106 
     */
107 
    function getCAPTCHA()
108 
    {
109 
        $res = '';
110 
        if ($this->_mode == 'single') {
111 
            for ($i = 0; $i < strlen($this->_phrase); $i++) {
112 
                $res .= ' '.Numbers_Words::toWords($this->_phrase{$i}, $this->_locale);
113 
            }
114 
        } else {
115 
            $res = Numbers_Words::toWords($this->_phrase, $this->_locale);
116 
        }
117 
        return $res;
118 
    }
119 
}