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<?php
/* Copyright (C) 2005-2007 Laurent Destailleur <eldy@users.sourceforge.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* or see http://www.gnu.org/
*/
/**
* \file htdocs/core/antispamimage.php
* \brief Return antispam image
*/
define('NOLOGIN', 1);
if (! defined('NOREQUIREUSER')) define('NOREQUIREUSER', 1);
if (! defined('NOREQUIREDB')) define('NOREQUIREDB', 1);
if (! defined('NOREQUIRETRAN')) define('NOREQUIRETRAN', 1);
if (! defined('NOREQUIREMENU')) define('NOREQUIREMENU', 1);
if (! defined('NOREQUIRESOC')) define('NOREQUIRESOC', 1);
if (! defined('NOTOKENRENEWAL')) define('NOTOKENRENEWAL', 1);
require_once '../main.inc.php';
/*
* View
*/
$length=5;
$letters = 'aAbBCDeEFgGhHJKLmMnNpPqQRsStTuVwWXYZz2345679';
$number = strlen($letters);
$string = '';
for($i = 0; $i < $length; $i++)
{
$string .= $letters{mt_rand(0, $number - 1)};
}
//print $string;
$sessionkey='dol_antispam_value';
$_SESSION[$sessionkey]=$string;
$img = imagecreate(80, 32);
if (empty($img))
{
dol_print_error('', "Problem with GD creation");
exit;
}
// Define mime type
top_httphead('image/png', 1);
$background_color = imagecolorallocate($img, 250, 250, 250);
$ecriture_color = imagecolorallocate($img, 0, 0, 0);
imagestring($img, 4, 24, 8, $string, $ecriture_color);
imagepng($img);