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+NAME:
+
+ Securimage - A PHP class for creating captcha images and audio with many options.
+
+VERSION:
+
+ 3.6.6
+
+AUTHOR:
+
+ Drew Phillips <drew@drew-phillips.com>
+
+DOWNLOAD:
+
+ The latest version can always be
+ found at http://www.phpcaptcha.org
+
+DOCUMENTATION:
+
+ Online documentation of the class, methods, and variables can
+ be found at http://www.phpcaptcha.org/Securimage_Docs/
+
+REQUIREMENTS:
+
+ PHP 5.2 or greater
+ GD 2.0
+ FreeType (Required, for TTF fonts)
+ PDO (if using Sqlite, MySQL, or PostgreSQL)
+
+SYNOPSIS:
+
+ require_once 'securimage.php';
+
+ **Within your HTML form**
+
+ <form method="post" action="">
+ .. form elements
+
+ <div>
+ <?php echo Securimage::getCaptchaHtml() ?>
+ </div>
+ </form>
+
+
+ **Within your PHP form processor**
+
+ // Code Validation
+
+ $image = new Securimage();
+ if ($image->check($_POST['captcha_code']) == true) {
+ echo "Correct!";
+ } else {
+ echo "Sorry, wrong code.";
+ }
+
+DESCRIPTION:
+
+ What is Securimage?
+
+ Securimage is a PHP class that is used to generate and validate CAPTCHA
+ images.
+
+ The classes uses an existing PHP session or creates its own if
+ none is found to store the CAPTCHA code. In addition, a database can be
+ used instead of session storage.
+
+ Variables within the class are used to control the style and display of
+ the image. The class uses TTF fonts and effects for strengthening the
+ security of the image.
+
+ It also creates audible codes which are played for visually impared users.
+
+UPGRADE NOTICE:
+ 3.6.3 and below:
+ Securimage 3.6.4 fixed a XSS vulnerability in example_form.ajax.php. It is
+ recommended to upgrade to the latest version or delete example_form.ajax.php
+ from the securimage directory on your website.
+
+ 3.6.2 and above:
+ If you are upgrading to 3.6.2 or greater AND are using database storage,
+ the table structure has changed in 3.6.2 adding an audio_data column for
+ storing audio files in the database in order to support HTTP range
+ requests. Delete your tables and have Securimage recreate them or see
+ the function createDatabaseTables() in securimage.php for the new structure
+ depending on which database backend you are using and alter the tables as
+ needed. If using SQLite, just overwrite your existing securimage.sq3 file
+ with the one from this release.
+
+ If you are not using database tables for storage, ignore this notice.
+
+COPYRIGHT:
+
+ Copyright (c) 2016 Drew Phillips
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ - Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ - Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+
+LICENSES:
+
+ The WavFile.php class used in Securimage by Drew Phillips and Paul Voegler
+ is used under the BSD License. See WavFile.php for details.
+ Many thanks to Paul Voegler (http://www.voegler.eu/) for contributing to
+ Securimage.
+
+ ---------------------------------------------------------------------------
+ Flash code created by Age Bosma & Mario Romero (animario@hotmail.com)
+ Many thanks for releasing this to the project!
+
+ ---------------------------------------------------------------------------
+ Portions of Securimage contain code from Han-Kwang Nienhuys' PHP captcha
+
+ Han-Kwang Nienhuys' PHP captcha
+ Copyright June 2007
+
+ This copyright message and attribution must be preserved upon
+ modification. Redistribution under other licenses is expressly allowed.
+ Other licenses include GPL 2 or higher, BSD, and non-free licenses.
+ The original, unrestricted version can be obtained from
+ http://www.lagom.nl/linux/hkcaptcha/
+
+ ---------------------------------------------------------------------------
+ AHGBold.ttf (AlteHaasGroteskBold.ttf) font was created by Yann Le Coroller
+ and is distributed as freeware.
+
+ Alte Haas Grotesk is a typeface that look like an helvetica printed in an
+ old Muller-Brockmann Book.
+
+ These fonts are freeware and can be distributed as long as they are
+ together with this text file.
+
+ I would appreciate very much to see what you have done with it anyway.
+
+ yann le coroller
+ www.yannlecoroller.com
+ yann@lecoroller.com
+
+ ---------------------------------------------------------------------------
+ Portions of securimage_play.swf use the PopForge flash library for
+ playing audio
+
+ /**
+ * Copyright(C) 2007 Andre Michelle and Joa Ebert
+ *
+ * PopForge is an ActionScript3 code sandbox developed by Andre Michelle
+ * and Joa Ebert
+ * http://sandbox.popforge.de
+ *
+ * PopforgeAS3Audio 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.
+ *
+ * PopforgeAS3Audio 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/>
+ */
+
+ --------------------------------------------------------------------------
+ Some graphics used are from the Humility Icon Pack by WorLord
+
+ License: GNU/GPL (http://findicons.com/pack/1723/humility)
+ http://findicons.com/icon/192558/gnome_volume_control
+ http://findicons.com/icon/192562/gtk_refresh
+
+ --------------------------------------------------------------------------
+ Background noise sound files are from SoundJay.com
+ http://www.soundjay.com/tos.html
+
+ All sound effects on this website are created by us and protected under
+ the copyright laws, international treaty provisions and other applicable
+ laws. By downloading sounds, music or any material from this site implies
+ that you have read and accepted these terms and conditions:
+
+ Sound Effects
+ You are allowed to use the sounds free of charge and royalty free in your
+ projects (such as films, videos, games, presentations, animations, stage
+ plays, radio plays, audio books, apps) be it for commercial or
+ non-commercial purposes.
+
+ But you are NOT allowed to
+ - post the sounds (as sound effects or ringtones) on any website for
+ others to download, copy or use
+ - use them as a raw material to create sound effects or ringtones that
+ you will sell, distribute or offer for downloading
+ - sell, re-sell, license or re-license the sounds (as individual sound
+ effects or as a sound effects library) to anyone else
+ - claim the sounds as yours
+ - link directly to individual sound files
+ - distribute the sounds in apps or computer programs that are clearly
+ sound related in nature (such as sound machine, sound effect
+ generator, ringtone maker, funny sounds app, sound therapy app, etc.)
+ or in apps or computer programs that use the sounds as the program's
+ sound resource library for other people's use (such as animation
+ creator, digital book creator, song maker software, etc.). If you are
+ developing such computer programs, contact us for licensing options.
+
+ If you use the sound effects, please consider giving us a credit and
+ linking back to us but it's not required.
+