[thelist] PHP -Self-finding navigational includes

[Fred D Yocum]

Using PHP to create a repeating object like a navigational sidebar with an 
include file seems like a good idea. This is trivial to accomplish If all 
the paths are either absolute 
(http://somewhere.com/thisdirectory/thatfile.html) or everything is at the 
same directory level, the links can be hard coded. If they're not, you 
need  a function/routine that figures out where the page (with the 
included navigational side bar) is within the directory structure and 
writes the paths accordingly. This is a problem I am sure which has been 
solved on numerous occassions -- just not by me. A couple of quick 
searches has brought up numbers of articles extolling the virtues of 
putting repeated navigational items that don't address this issue. Can 
anyone point me in the direction of an efficient way of doing this? 

F D Yocum