This class facilitates the maintenance of htgroup files, used to do Basic Authentication on a web server. This class assumes PHP v3.0 or better and Apache 1.3.3 or better. Htgroup file format should conform to the httpd spec (ie. groupname: user user user user, groupname: user user user user user) A groupname, terminated by a colon, followed by one or more users seperated by spaces, and line terminated with a carriage return. Group files that do not conform to the httpd spec will cause strange things to happen.