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1 | NAME: | ||
2 | |||
3 | Securimage - A PHP class for creating and managing form CAPTCHA images | ||
4 | |||
5 | VERSION: 2.0 BETA | ||
6 | |||
7 | AUTHOR: | ||
8 | |||
9 | Drew Phillips <drew@drew-phillips.com> | ||
10 | |||
11 | DOWNLOAD: | ||
12 | |||
13 | The latest version can always be | ||
14 | found at http://www.phpcaptcha.org | ||
15 | |||
16 | DOCUMENTATION: | ||
17 | |||
18 | Online documentation of the class, methods, and variables can | ||
19 | be found at http://www.phpcaptcha.org/Securimage_Docs/ | ||
20 | |||
21 | REQUIREMENTS: | ||
22 | PHP 4.3.0 | ||
23 | GD 2.0 | ||
24 | FreeType (recommended, required for TTF support) | ||
25 | |||
26 | SYNOPSIS: | ||
27 | |||
28 | require_once 'securimage.php'; | ||
29 | |||
30 | $image = new Securimage(); | ||
31 | |||
32 | $image->show(); | ||
33 | |||
34 | // Code Validation | ||
35 | |||
36 | $image = new Securimage(); | ||
37 | if ($image->check($_POST['code']) == true) { | ||
38 | echo "Correct!"; | ||
39 | } else { | ||
40 | echo "Sorry, wrong code."; | ||
41 | } | ||
42 | |||
43 | DESCRIPTION: | ||
44 | |||
45 | What is Securimage? | ||
46 | |||
47 | Securimage is a PHP class that is used to generate and validate CAPTCHA images. | ||
48 | The classes uses an existing PHP session or creates its own if none is found to store the | ||
49 | CAPTCHA code. Variables within the class are used to control the style and display of the image. | ||
50 | The class supports TTF fonts and effects for strengthening the security of the image. | ||
51 | If TTF support is not available, GD fonts can be used as well, but certain options such as | ||
52 | transparent text and angled letters cannot be used. | ||
53 | |||
54 | |||
55 | COPYRIGHT: | ||
56 | Copyright (c) 2009 Drew Phillips. All rights reserved. | ||
57 | This software is released under the GNU Lesser General Public License. | ||
58 | |||
59 | ----------------------------------------------------------------------------- | ||
60 | Flash code created for Securimage by Douglas Walsh (www.douglaswalsh.net) | ||
61 | Many thanks for releasing this to the project! | ||
62 | |||
63 | ------------------------------------------------------------------------------ | ||
64 | Portions of Securimage contain code from Han-Kwang Nienhuys' PHP captcha | ||
65 | |||
66 | Han-Kwang Nienhuys' PHP captcha | ||
67 | Copyright June 2007 | ||
68 | |||
69 | This copyright message and attribution must be preserved upon | ||
70 | modification. Redistribution under other licenses is expressly allowed. | ||
71 | Other licenses include GPL 2 or higher, BSD, and non-free licenses. | ||
72 | The original, unrestricted version can be obtained from | ||
73 | http://www.lagom.nl/linux/hkcaptcha/ | ||
74 | |||
75 | ------------------------------------------------------------------------------- | ||
76 | AHGBold.ttf (AlteHaasGroteskBold.ttf) font was created by Yann Le Coroller and is distributed as freeware | ||
77 | |||
78 | Alte Haas Grotesk is a typeface that look like an helvetica printed in an old Muller-Brockmann Book. | ||
79 | |||
80 | These fonts are freeware and can be distributed as long as they are | ||
81 | together with this text file. | ||
82 | |||
83 | I would appreciate very much to see what you have done with it anyway. | ||
84 | |||
85 | yann le coroller | ||
86 | www.yannlecoroller.com | ||
87 | yann@lecoroller.com | ||
88 | |||