How to store data that doesn't change?

Hi, How do you people store data that doesn't change, an example of this would be the version number of your software. You might want to use it through out your program but how to you store it? As far as I can see there are several options to use this data. 1. Global Variable 2. Store it in a registry class 3. Store it in a named constant. 4. Use a function that will return the data (kind of like a regsitry class but it's not a class) Personally I don't like option 1 but what about the other options. Is any of them faster then the others. What other pros and cons are there. -- Peter van der Does GPG key: E77E8E98 IRC: Ganseki on irc.freenode.net Twitter: @petervanderdoes WordPress Plugin Developer Blog: http://blog.avirtualhome.com Forums: http://forums.avirtualhome.com Twitter: @avhsoftware