BotDetect PHP CAPTCHA

Lanapsoft BotDetect™ prevents automated submissions of PHP forms using CAPTCHA images. The BotDetect Captcha PHP class generates and validates best-of-class Captcha images specifically designed to be out of reach of current computer vision and OCR technologies.

Why BotDetect PHP CAPTCHA?

BotDetect is unique among Captcha solutions in offering many Captcha image and sound styles. While each of them is easily comprehensible to human users, randomly using multiple Captcha generation algorithms makes the Captcha challenge practically impossible to pass automatically.

This approach to Captcha security is validated by the BotDetect track record: we have over 2000 paying customers and not one confirmed case of automated Captcha breaking.

The BotDetect PHP CAPTCHA Library

This high-security Captcha protection can be added to your PHP forms with a single line
(<?php require("BotDetect.php"); ?>), and fully customized and randomized by editing the BotDetect\CaptchaConfig.php file. The library also comes with several PHP code samples demonstrating how to integrate Captcha protection in various PHP usage scenarios, and how to use the many available Captcha features.

BotDetect PHP CAPTCHA Features

60 secure & readable Captcha image styles
Custom Captcha image size, format, color scheme...
Custom Captcha code length, style, character set, timeouts, generated code filtering...
Many other randomization & customization options
Produces XHTML 1.1 Strict and WCAG AAA compliant markup
Validates properly when CAPTCHA forms are simultaneously open in multiple browser tabs

BotDetect PHP CAPTCHA Free Version

You can download BotDetect PHP CAPTCHA Library for free and use it immediately! Your PHP forms can be protected from spam (and bots in general) in minutes.

We offer basic email support for free to all BotDetect users. So if you need any assistance integrating BotDetect or have any questions or feedback, our Support departement is at your disposal.

Once the BotDetect Captcha component has been integrated into your PHP website and you're satisfied with how it works, it's easy to upgrade your license if you need the extra features offered by commercial BotDetect versions.

BotDetect PHP CAPTCHA Free Download

BotDetect PHP CAPTCHA System Requirements

OS	Server	PHP
Supported Operating Systems: Linux Windows Mac OS X	Supported Web Servers: Apache 2.2+	Supported PHP Versions: PHP 5.2.16+ PHP 5.3.2+

OS

Server

PHP

Supported Operating Systems:

Linux
Windows
Mac OS X

Supported Web Servers:

Apache 2.2+

Supported PHP Versions:

PHP 5.2.16+
PHP 5.3.2+

Please Note

BotDetect 3.0 PHP Captcha Library Alpha is a work in progress, and we need you to guide our efforts towards a polished product. Please let us know if you encounter any bugs, implementation issues, or a usage scenario you would like to discuss.

The PHP library does not yet support the full feature set of the other BotDetect 3.0 Captcha products (ASP.NET and ASP Classic). Captcha localization and Captcha sounds are not implemented yet, but are coming soon.

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