<?php

/**************************************************************************************************

* nullBB - Light CMS forum *

* Copyright (C) 2009, BlackLight *

* *

* 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/>. *

**************************************************************************************************/

$alphabeth = array();

for ($i=ord('a'); $i<=ord('z'); $i++)

array_push($alphabeth,chr($i));

for ($i=0; $i<=9; $i++)

array_push($alphabeth,$i);

$key = 'lolasd';

$randstr = '';

$cyph = urldecode(base64_decode($_GET['str']));

for ($i=0; $i<6; $i++)

$randstr .= ($cyph[$i] ^ $key[$i%6]);

$img=imageCreate(60,30);

$black=imageColorAllocate($img,0,0,0);

$white=imageColorAllocate($img,255,255,255);

imageRectangle($img,0,0,99,49,$white);

imageString($img, 5, 2, 10, $randstr, $white);

header("Content-type: image/png");

imagePng($img);

imageDestroy($img);

?>