carlg Posted October 1, 2007 Share Posted October 1, 2007 I don't even know what it's called, but it's a common thing. I you ever listed something on craigslist or some web forums use this before you post. It's usually some some with the background as some sort of picture. For example, if you list something on craigslist you will need to enter a verification code into a text box before you can list. The code will be some text with a picture background. If you can't type the code properly, you don't get the listing. How is this done? Thanks Carl Quote Link to comment https://forums.phpfreaks.com/topic/71453-how-is-this-done/ Share on other sites More sharing options...
BlueSkyIS Posted October 2, 2007 Share Posted October 2, 2007 it is called CAPTCHA. http://en.wikipedia.org/wiki/Captcha you may want to check out http://www.phpclasses.org/ for some pre-written, or search. Quote Link to comment https://forums.phpfreaks.com/topic/71453-how-is-this-done/#findComment-359703 Share on other sites More sharing options...
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