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Image verification on form submissionsby stonecolddevin (Parson) |
on Nov 08, 2006 at 08:16 UTC ( [id://582820]=perlquestion: print w/replies, xml ) | Need Help?? |
stonecolddevin has asked for the wisdom of the Perl Monks concerning the following question: Hey monks, I'm trying to figure out how to create a system where the user must type in a phrase or somesuch from an image that's displayed on the page as a form of verification to prevent spam, autosignups, etc. Yahoo! and Google's Blogger do this (A PHP tutorial here, and an example here (near the bottom of the page)). I know merlyn has an article on this on his website, but I can't seem to find it. I also know it's going to involve GD::*, or Image::Magick (or something along those lines), a random string/word generator, and some hidden form values. Beyond that, I'm not sure. Any ideas?
meh.
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