My demo of the PHP web application using google reCaptcha to protect his site from abuse and spam at # DevFest19 #DevFestYaounde.
reCAPTCHA is a free CAPTCHA service that protects websites from spam and abuse. This is a PHP library that wraps up the server-side verification step required to process responses from the reCAPTCHA service. This client supports both v2 and v3.
reCAPTCHA: https://www.google.com/recaptcha
The repo I used: https://github.com/google/recaptcha
Hosted demo: https://recaptcha-demo.appspot.com/
reCAPTCHA Configuration - go to Google and get your keys http://www.google.com/recaptcha/admin