BotDetect PHP CAPTCHA Validation:
PHP Form CAPTCHA Code Example

CAPTCHA Code Example Description

This BotDetect Captcha PHP code example shows how to add BotDetect CAPTCHA protection to a typical PHP form.

Captcha validation is integrated with other form fields validation, and only submissions that meet all validation criteria are accepted.

If the Captcha is sucessfully solved but other field validation fails, the Captcha is hidden since the users have already proven they are human.

This kind of validation could be used on various types of public forms which accept messages, and are at risk of unwanted automated submissions.

For example, it could be used to ensure bots can't submit anything to a contact form, add guestbook entries, blog post comments or anonymous message board / forum replies.