PHP: Anti-Flood/Spam system

Question

I\'m actually working on a PHP project that will feature a user system (Login,Register,Send lost password to email,..) and I think that this may be very vulnerable to Brute-Forc

Answer 1

Storing IP addresses is good practise for loggin and tracking but I think that just a captcha would stop spamming, brute-force attacks and flooding.

Recaptcha is indeed a good solution.