Posted by Tom on 11/03/06 17:52

I was looking for a captcha class recently myself. phpclasses.org has
several. hn_captcha was my favorite:

http://www.phpclasses.org/browse/package/1569.html


On Nov 3, 8:52 am, David Gillen <Bel...@RedBrick.DCU.IE> wrote:
> An noise sounding like Barry Morris said:> One web site I have written has a 'register your interest' form which simply
> > e-mails the data, this is working fine except some people seem to get off on
> > repeatedly using the form to send phoney data. I guess this is from some
> > kind of web-bot so I would like to attempt to program around this problem.
>
> > One solution is using a distorted image of some letters (CAPTCHA?), however
> > I was wondering if anybody has chosen a simpler method, and whether my
> > simple method would be impervious to web-bots?
>
> > 1/ Generate a random string of letters
> > 2/ Ask the user to select from 3 combo boxes 3 random positions, e.g. select
> > letters 2, 6 and 7 from LKJIUVBJH.Easy to program around, but unless someone actively wants to circumvent it
> probably will do the trick.
>
> There are however plenty of easy to plug in captcha libraries out there.
> Google is your friend here.
>
> D.
> --
> /(bb|[^b]{2})/
> Trees with square roots don't have very natural logs.
> What's the difference between ignorance and apathy? Who knows? Who cares?

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