Text_CAPTCHA

Text_CAPTCHA

Implementation of CAPTCHAs (Completely Automated Public Turing tests to tell Computers and Humans Apart).

Introduction

This package provides the functionality to create CAPTCHAs (Completely Automated Public Turing tests to tell Computers and Humans Apart). Features include:

The package creates CAPTCHAs; due to the stateless nature of the HTTP protocol, the logic to secure a webpage using the package must be specifically implemented. See the usage example for detailled information.

Currently, the graphical CAPTCHA driver depends on Image_Text which in turn requires TTF support to be compiled into PHP.

Example

The following example implements the standard use of a CAPTCHA: Submitted form data is only evaluated when a CAPTCHA has been solved correctly.

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