Revision 147
Added by ryan about 19 years ago
trunk/wb/include/captcha.php | ||
---|---|---|
1 |
<?php |
|
2 |
|
|
3 |
// $Id$ |
|
4 |
|
|
5 |
/* |
|
6 |
|
|
7 |
Website Baker Project <http://www.websitebaker.org/> |
|
8 |
Copyright (C) 2004-2005, Ryan Djurovich |
|
9 |
|
|
10 |
Website Baker is free software; you can redistribute it and/or modify |
|
11 |
it under the terms of the GNU General Public License as published by |
|
12 |
the Free Software Foundation; either version 2 of the License, or |
|
13 |
(at your option) any later version. |
|
14 |
|
|
15 |
Website Baker is distributed in the hope that it will be useful, |
|
16 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
17 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
18 |
GNU General Public License for more details. |
|
19 |
|
|
20 |
You should have received a copy of the GNU General Public License |
|
21 |
along with Website Baker; if not, write to the Free Software |
|
22 |
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
|
23 |
|
|
24 |
*/ |
|
25 |
|
|
26 |
/* |
|
27 |
|
|
28 |
Captcha generator |
|
29 |
|
|
30 |
This file generates a captcha image. |
|
31 |
Credits to http://php.webmaster-kit.com/ for the original code. |
|
32 |
|
|
33 |
*/ |
|
34 |
|
|
35 |
$image = imagecreate(120, 30); |
|
36 |
$white = imagecolorallocate($image, 0xFF, 0xFF, 0xFF); |
|
37 |
$gray = imagecolorallocate($image, 0xC0, 0xC0, 0xC0); |
|
38 |
$darkgray = imagecolorallocate($image, 0x50, 0x50, 0x50); |
|
39 |
srand((double)microtime()*1000000); |
|
40 |
for ($i = 0; $i < 30; $i++) { |
|
41 |
$x1 = rand(0,120); |
|
42 |
$y1 = rand(0,30); |
|
43 |
$x2 = rand(0,120); |
|
44 |
$y2 = rand(0,30); |
|
45 |
imageline($image, $x1, $y1, $x2, $y2 , $gray); |
|
46 |
} |
|
47 |
for ($i = 0; $i < 5; $i++) { |
|
48 |
$cnum[$i] = rand(0,9); |
|
49 |
} |
|
50 |
for ($i = 0; $i < 5; $i++) { |
|
51 |
$fnt = rand(3,5); |
|
52 |
$x = $x + rand(12 , 20); |
|
53 |
$y = rand(7 , 12); |
|
54 |
imagestring($image, $fnt, $x, $y, $cnum[$i] , $darkgray); |
|
55 |
} |
|
56 |
$digit = "$cnum[0]$cnum[1]$cnum[2]$cnum[3]$cnum[4]"; |
|
57 |
header('Content-type: image/png'); |
|
58 |
imagepng($image); |
|
59 |
imagedestroy($image); |
|
60 |
|
|
61 |
?> |
|
0 | 62 |
Also available in: Unified diff
Moved captcha.php into include dir