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PHP Library for reCAPTCHA The reCAPTCHA PHP Library provides a simple way to place a CAPTCHA on your PHP website, helping you stop bots from abusing your website. The library wraps the reCAPTCHA API. The library also includes an API for Mailhide, a way to wrap email addresses in a reCAPTCHA, hiding them from spammers. reCAPTCHA Quickstart These instructions should get you started quickly if you kn

Digitizing Books One Word at a Time reCAPTCHA is a free CAPTCHA service that helps to digitize books. A CAPTCHA is a program that can tell whether its user is a human or a computer. You've probably seen them — colorful images with distorted text at the bottom of Web registration forms. CAPTCHAs are used by many websites to prevent abuse from "bots," or automated programs usually written to genera