Publisher review:captcha calculation produces a JPG image with a calculation for spam-prevention. captcha calculation produces a JPG image with a calculation for spam-prevention. It is an alternative to captcha images.
captcha calculation is a PHP script for Snippets scripts design by assbach.
It runs on following operating system: Windows / Linux / Mac OS / BSD / Solaris.
Operating system:Windows / Linux / Mac OS / BSD / Solaris