Conteg is a PHP class to negotiate the current
HTTP request response for Web output. It issues
full Response headers and can change the server
response depending on the Request headers sent (as
Apache does for static files). This can be used to
avoid sending cached content that is up to date.
It can also be used to serve load-balanced
compressed output. The entire class is implemented
in a single file, and only three lines are needed
to use the class.
