// not so many trolls
/* Captcha - version 1.0 - released 2006-02-05 */
/* copyright © 2006 Andy Bowers */
/*
The scripts in this package are 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 2 of the License,
or (at your option) any later version.
These scripts are distributed in the hope that they 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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330,
Boston, MA 02111-1307 USA
*/
captcha scripts from php_noob
==============================
These scripts and supporting files is intended to be used as a technique
for preventing/reducing robotic abuse of forms on your site. They generate a
'security' image with a random string of characters, randomly rotated, and
placed on a randomly selected 'chunk' of a much larger background image.
The demonstration file (test.php) will show you how you could set up a
form on your site. Modify the form (and the input error-checking) to suit
your particular needs.
Adjustments available - by changing the catcha_config.php file - include:
- use your own background image for the 'captcha' image
- use any font you want
- change the size of the 'captcha' image
- change font size and colour
- font rotation random/off
- change the number of characters in the security image
To use the security image technique, upload the files in this zip in the same folder
structure as it contains here. Modify the demo form (or your own existing forms) to
suit. You're done.
Experiment with your own background image, choice of font, and colours.
******* CAUTION *******
The script assumes you have the GD Version 2 software installed on your serverback