View Full Version : Text in images?

11-03-2004, 07:08 PM
Hi all, ive never really looked into it but was wondering if someone could give a brief explanation as to how certain images come to generate random numebrs/chars for confirmation numbers ect to stop bots signing up.

would also like to know how you would check against it.


11-03-2004, 07:43 PM
It's done by a server side script, often PHP with GD support, read the PHP Manual for more info...