106696 Re-Posted PHP Mail Form

My existing mail form (PHP) is allowing spammers to enter data and hit multiple times sending spam messages. Need form I can embed into my website page that is Spam Proof. Prefer some code box with random character generator so user has to manually verify before sending mail. Also allows sender one send, set by cookie or other way to stop repeating spam. I will install on my page. ( I will use on my 2 other domains, so must be able to configure for multiple use )