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Securimage PHP Captcha | Free Captcha Script

www.phpcaptcha.org/

A free open-source PHP CAPTCHA script for generating complex CAPTCHA images and audio files. Easy to integrate and customize.

A Simple PHP CAPTCHA Script · A Beautiful Site

www.abeautifulsite.net/a-simple-php-captcha-script

Jan 16, 2011 ... This is one of the easiest CAPTCHA scripts you will ever use. While it doesn't obscure the text, it will serve its purpose well for many people ...

Protecting forms using a CAPTCHA < PHP | The Art of Web

www.the-art-of-web.com/php/captcha/

Presenting a simple PHP script for generating a CAPTCHA and using it to block spammers from submitting your online forms.

A simple PHP CAPTCHA script. - GitHub

github.com/claviska/simple-php-captcha

A simple PHP CAPTCHA script. Contribute to simple-php-captcha development by creating an account on GitHub.

PHP simple captcha script | Web Tools

99webtools.com/blog/php-simple-captcha-script/

Mar 12, 2013 ... A CAPTCHA is a type of challenge-response test used in website as an attempt to ensure that the response is generated by a human being.

GitHub - josecl/cool-php-captcha: This is the official GitHub project ...

github.com/josecl/cool-php-captcha

Jan 20, 2016 ... This is the official GitHub project from code.google.com/p/cool-php-captcha.

Using reCAPTCHA with PHP | reCAPTCHA | Google Developers

developers.google.com/recaptcha/old/docs/php

If you want to use the PHP library to display ... or the CAPTCHA may not show on some ...

21 Free CAPTCHA Sources - Codrops

tympanus.net/codrops/2009/09/22/21-free-captcha-sources/

Sep 22, 2009 ... Here is a collection of free CAPTCHA scripts and services than you can easily integrate into your website using PHP or JavaScript: 1.

Sample PHP Implementation - The Captcha image

captchas.net/sample/php/

PHP Module. Have you read our HowTo? We are providing a PHP module to simplify the task of writing a web application using captchas.net. It is named ...

Captcha Code in PHP and jQuery | FormGet

www.formget.com/captcha-code-php-jquery/

Start implementing your own Captcha code using PHP, AJAX and jQuery. Its very simple to create and implement.