if(defined($tmphash->{$part}))  { # Does the part exists in the hash-tree?
                        if($i == @parts-1) { # Is this the last part of the path?
                                $found=1; # Yes, the folder is in the database!
                        } else { # Not the last part of the path
                                $tmphash=$tmphash->{$part}; # Go one level further
                        }
                } else {                  
                        last; # The path is not in the database
                }