BotDetect CAPTCHA PHP Web Applications

An overview of web applications installed with BotDetect 3 PHP CAPTCHA Library.

BotDetect Demos

Demo web applications demonstrate various BotDetect CAPTCHA features and options.

BotDetect Features Demo

This demo allows you to easily experiment with various BotDetect parameters and their combinations, so you can determine the best CAPTCHA settings for your needs.

BotDetect Integration Samples

Integration sample projects show how to integrate BotDetect in your PHP applications.

PHP Basic Captcha Sample

This sample project shows the most basic source code required to protect an PHP form with BotDetect CAPTCHA and validate the user input.

It can be used as a starting point when you are first learning how to use BotDetect.

PHP Form Captcha Sample

This sample project shows how to add BotDetect CAPTCHA protection to a typical PHP form.

Captcha validation is integrated with other form fields validation, and only submissions that meet all validation criteria are accepted.

If the Captcha is sucessfully solved but other field validation fails, the Captcha is hidden since the users have already proven they are human.

This kind of validation could be used on various types of public forms which accept messages, and are at risk of unwanted automated submissions.

For example, it could be used to ensure bots can't submit anything to a contact form, add guestbook entries, blog post comments or anonymous message board / forum replies.