Anti Spam scripts that will protect your forms to be submited by spammer's bots. Captcha (an acronym for "Completely Automated Public Turing test to tell Computers and Humans Apart" ) is the most common and effective spam protection technique.

 

Captcha is a type of challenge-response test used in computing to determine whether or not the user is human or spammer's robot. A CAPTCHA involves one computer (a server) which asks a user to complete a test. While the computer is able to generate and grade the test, it is not able to solve the test on its own. Because computers are unable to solve the CAPTCHA, any user entering a correct solution is presumed to be human.

Protect your forms from spammers with these free php spam protection scripts.