Could someone tell me where can i find a description of the error codes displayed by a server?.
What error codes would that be. the codes for perl? php? mysql? pgsql? there are quite a few.
If you want to code that a WEBserver gives, look for the RFC about HTTP.
refcards.com has a cool Apache Quick Reference that has the name of all the HTTP errors on it. Otherwise I'd check the RFC. Or doing a search on any search engine for 'http error codes' would give you a few hundred pages with a listing.