Thread:Extension talk:ConfirmEdit/Multiple CAPTCHAS at once?

An example would be having both a QuestyCAPTCHA to prevent bots from telling humans to solve the CAPTCHAs themselves and the humans always being familiar with the CAPTCHA and an ASIRRA CAPTCHA to prevent math-problem-solving spambots or spambots that use OCRs from cracking the CAPTCHAs. This LocalSettings.php example shows how it could work:

(sorry if this is not good PHP code, but I'm not really a PHP programmer)