I looked through the CAPTCHA related threads, but I didn't find a direct answer to this question. I'm wondering, how exactly does the CAPTCHA work? In the last few days it's stopped working at my site, but it coincides with some changes the hosting company was making. I'm sure the fact that CAPTCHA isn't working is related to whatever it is they've done (we're having other problems too), but before I contact them I'd like to know how it works. Is it just PHP generating an image?
It's a php generated image. By not working do you mean the image isn't displaying? If so, it's almost certainly a problem with the GD setup in your hosting. There's a plain captcha button in the includes folder that should work for you if that's the case. Just rename the current button to something else and then rename the basic button to be button.php.
No, it displays. It's just that even when the proper numbers are entered, it says that it's incorrect every time. I thought at first it might just be a browser-specific issue, but we went from 7-8 signups a day to 0 for the days since we started noticing other issues.
Probably a cookie issue then.
