ReCAPTCHA/example-captcha.php at master · appleboy/ReCAPTCHA · GitHub
Girfa : Student Help: Google Recaptcha
MDL-48501] Migrate to reCAPTCHA v2 API - Moodle Tracker
skeleton_research/01-dirs.txt at 1.x · php-pds/skeleton_research · GitHub
AJAX Contact Form using jQuery with reCAPTCHA - EarlySandwich.comTechnology & Programming Blog
Implementar Google ReCAPTCHA en un formulario PHP - Ayuda | dinahosting
php tutorial - How to Setup Google Captcha PHP - By Microsoft Award MVP - php programming - learn php - php code - php script - Learn in 30sec | wikitechy
Simple integration Google reCAPTCHA v2 with Laravel in details | by mitrallex | codeburst
GitHub - jxmot/reCAPTCHA: A small working example of reCAPTCHA in PHP, uses MySQL This repository contains v1.0.0 single file(updated for PHP >7) and a modified version of 1.2.4 that doesn't require Composer