So, client has a html site with contact form with a php mailer script, it was getting lots of spam comments. Client wanted to protected it from the spam using google Recaptcha v3. Here is the simple html and the related PHP Mailer with complete setup with google Recaptcha v3. Just you need to use your own SITE KEY and SECRET KEY to make it work.
Here is the basic HTML Contact Form, at the bottom of the code there is YOUR SITE KEY, please replace it with your google Recaptcha v3 Site Keys
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