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Posted by petersprc on 10/20/06 19:04
Hi,
You can use any of these:
http://www.white-hat-web-design.co.uk/articles/php-captcha.php
http://pear.php.net/package/Text_CAPTCHA
http://captchas.net/sample/php/
Victor wrote:
> Hi everybody,
>
> I am developing a PHP project, where users must register and get
> entered into a database - this is nothing new. It must be provided that
> a malicious script cannot fill the database with garbage entries. I
> have seen on some advanced pages how after sending register data a user
> gets presented with a picture containing some text or number that
> cannot be recognized by machine while easily by human. The user must
> enter that number and send it back; only then gets he entered in the
> DB.
>
> This method seems to be rather secure, and I would like implement it in
> my project.
>
> Here is my question :
>
> Where do these pictures come from? Are there any PHP-functions that
> allow to generate them programmatically? Or any other way?
>
> Can anybody give me an advice?
>
> Regards
> Victor
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