Revision 145
Added by ryan about 19 years ago
trunk/wb/framework/captcha.php | ||
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<?php |
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// $Id$ |
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/* |
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Website Baker Project <http://www.websitebaker.org/> |
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Copyright (C) 2004-2005, Ryan Djurovich |
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Website Baker is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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Website Baker is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with Website Baker; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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/* |
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Captcha generator |
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This file generates a captcha image. |
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Credits to http://php.webmaster-kit.com/ for the original code. |
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*/ |
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$image = imagecreate(120, 30); |
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$white = imagecolorallocate($image, 0xFF, 0xFF, 0xFF); |
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$gray = imagecolorallocate($image, 0xC0, 0xC0, 0xC0); |
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$darkgray = imagecolorallocate($image, 0x50, 0x50, 0x50); |
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srand((double)microtime()*1000000); |
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for ($i = 0; $i < 30; $i++) { |
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$x1 = rand(0,120); |
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$y1 = rand(0,30); |
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$x2 = rand(0,120); |
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$y2 = rand(0,30); |
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imageline($image, $x1, $y1, $x2, $y2 , $gray); |
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} |
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for ($i = 0; $i < 5; $i++) { |
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$cnum[$i] = rand(0,9); |
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} |
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for ($i = 0; $i < 5; $i++) { |
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$fnt = rand(3,5); |
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$x = $x + rand(12 , 20); |
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$y = rand(7 , 12); |
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imagestring($image, $fnt, $x, $y, $cnum[$i] , $darkgray); |
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} |
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$digit = "$cnum[0]$cnum[1]$cnum[2]$cnum[3]$cnum[4]"; |
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header('Content-type: image/png'); |
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imagepng($image); |
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imagedestroy($image); |
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?> |
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Also available in: Unified diff
Initial captcha script