PHP variables (normally) only exist while any given script is running (and any other scripts it includes/requires while running). If you want any data to persist between calls to different scripts, you will need to use some other means of storing the data, whether that be sessions or cookies (user-specific persistence), database or file (which can be user-specific or application wide), or possibly using something like [man]memcache[/man].
"static" only controls how successive calls to that variable declared within a function are affected within a given script each time it calls that function.
