Posted by David Grant on 10/09/89 11:36

Dave M G wrote:
> First, is there a term for these kinds of images, or that kind of
> verification system? What would be the best search terms to look for
> source scripts?

CAPTCHA

> Second, can anyone recommend a resource for that kind of PHP script. If
> I really worked at it, I could probably write the script to generate a
> small PNG image with a random number in it. But I haven't the faintest
> clue how to distort it so it's only legible to humans, nor how to
> correlate the image with a number that a user inputs into a form field.

http://pear.php.net/package/Text_CAPTCHA

Cheers,

David
--
David Grant
http://www.grant.org.uk/

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