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Securimage PHP Captcha | Free Captcha Script


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

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


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


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

Using reCAPTCHA with PHP | reCAPTCHA | Google Developers


May 2, 2016 ... The reCAPTCHA PHP Library provides a simple way to place a CAPTCHA on your PHP website, helping you stop bots from abusing it.

Sample PHP Implementation - The Captcha image


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 ...

How do I add a CAPTCHA to my PHP form? - Stack Overflow


My knowledge of php is not good and I need help. I have this php form ... Check out recaptcha ... I really like Securimage is seems to work really ...

PHP simple captcha script | Web Tools


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.

Simple Captchas with PHP and GD - SitePoint


Mar 5, 2014 ... Mehul Jain explains how captchas work and demonstrates their implementation with PHP and the GD image library.

HTML contact form with CAPTCHA | WebDesignPub


Mar 14, 2011 ... In addition, we have the CAPTCHA image. The <img> tag for the CAPTCHA image points to the script captcha_code_file.php. The PHP script in ...

21 Free CAPTCHA Sources - Tympanus


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.

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A Simple PHP CAPTCHA Script · A Beautiful Site


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 ...

GitHub - Gregwar/Captcha: PHP Captcha library


PHP Captcha library. Contribute to Captcha development by creating an account on GitHub.

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


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