News Feed
Sections




News Archive
Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

FuzzyOpinions Blog:
Tutorial improving security with a PHP Captcha
February 21, 2007 @ 11:36:00

On the FuzzyOpinions blog, there's a basic tutorial that walks you through the creation of a CAPTCHA system to use how you'd like on your site. They target it towards the most common use - blocking unwanted comments to a site from spambots.

Although you might not know it by the name, a captcha is one of those little boxes you see, more and more lately, that ask you to type in a random code to verify that you are a human being and not a robot. There are many different varieties, but the basic idea is an image that is obscured slightly but readable by a human and used as a passcode for secure entry to a system or task.

The method is a simple combination of random text, a custom image, some of the PHP graphics functions, and a little addition to your HTML form (and PHP session) to get things up and running.

0 comments voice your opinion now!
security comment captcha tutorial image random session form html security comment captcha tutorial image random session form html


blog comments powered by Disqus

Similar Posts

Abhinav Singh's Blog: Wordpress style "Duplicate comment detected" using Memcached and PHP

Codewalkers.com: Creating a CAPTCHA with PHP

DevShed: Generating View from MySQL to Simulate the Model-View-Controller Schema in PHP

PHPBuilder.com: Search Google Books with the Zend Framework's Zend_Gdata Component

Ariz Jacinto's Blog: Compiling PHP with MSSQL Server's Native ODBC Driver for Linux as a PDO Driver


Community Events





Don't see your event here?
Let us know!


framework unittest list interview introduction language code threedevsandamaybe install laravel developer configure symfony2 podcast release testing refactor opinion community series

All content copyright, 2014 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework