Question

I have a demo server where I put samples of my apps, I send potential customers links to those apps. Is it possible to use htaccess to track visitors, without adding tracking capability to the apps themselves? The data I’m interested in are:

1. date and time of page visit
2. ip of visitor
3. url of the page visited
4. referrer
5. post and get (query string) data if any

Answer 1

That entirely depends on your webserver, what options it provides for htaccess overrides.

For Apache, the access log logs what you are looking for
http://httpd.apache.org/docs/current/logs.html#accesslog
but is not configurable via htaccess.