<?php
/*******************************************************************************
* Title: GBook - PHP Guestbook
* Version: 1.7 from 20th August 2009
* Author: Klemen Stirn
* Website: http://www.phpjunkyard.com
********************************************************************************
* COPYRIGHT NOTICE
* Copyright 2004-2009 Klemen Stirn. All Rights Reserved.
* The GBook may be used and modified free of charge by anyone
* AS LONG AS COPYRIGHT NOTICES AND ALL THE COMMENTS REMAIN INTACT.
* By using this code you agree to indemnify Klemen Stirn from any
* liability that might arise from it's use.
* Selling the code for this program, in part or full, without prior
* written consent is expressly forbidden.
* Using this code, in part or full, to create derivate work,
* new scripts or products is expressly forbidden. Obtain permission
* before redistributing this software over the Internet or in
* any other medium. In all cases copyright and header must remain intact.
* This Copyright is in full effect in any country that has International
* Trade Agreements with the United States of America or
* with the European Union.
* Removing any of the copyright notices without purchasing a license
* is expressly forbidden. To remove GBook copyright notice you must purchase
* a license for this script. For more information on how to obtain
* a license please visit the page below:
* http://www.phpjunkyard.com/copyright-removal.php
*******************************************************************************/
class PJ_SecurityImage
{
function PJ_SecurityImage($key)
{
$this->code = '';
$this->key = $key;
} // End PJ_SecurityImage
function encrypt($plain_text)
{
$this->code = trim(sha1($plain_text.$this->key));
} // End encrypt
function checkCode($mystring,$checksum)
{
$this->encrypt($mystring);
if ($this->code == $checksum)
return true;
else
return false;
} // End checkCode
function printImage($random_number)
{
header("Content-type: image/jpeg");
$im = @imagecreate(150, 40) or die("Cannot Initialize new GD image stream");
$background_color = imagecolorallocate($im, 255, 255, mt_rand(204,255));
for ($i=0;$i<strlen($random_number);$i++)
{
$text_color = imagecolorallocate($im, mt_rand(0,127), mt_rand(0,127), mt_rand(0,127));
$display = substr($random_number,$i,1);
$x = ($i*30) + mt_rand(3,16);
$y = mt_rand(3,26);
imagestring($im, 5, $x, $y, $display, $text_color);
}
for ($i=1;$i<100;$i++)
{
if ($i == 10 || $i == 30 || $i == 50 || $i == 70 || $i == 90)
{
$text_color = imagecolorallocate($im, mt_rand(0,127), mt_rand(0,127), mt_rand(0,127));
}
imagesetpixel($im,mt_rand(1,150),mt_rand(1,40),$text_color);
}
imagejpeg($im);
imagedestroy($im);
} // End printImage
function get()
{
return $this->code;
} // End get
} // End class PJ_SecurityImage
?>