kolum

Hi, I would like to generate a constant value that change from a website to website but have an identical value for a single website. For example $_SERVER['SERVER_ADDR'] doesn't change for a single website, but easy to guess. an other idea is realpath(dirname(__FILE__)) but this can change if the web application execute scripts located in sub directories of the main script that use this variable. So what other possibilities to get a constant value that doesn't change ? Thank you.