I am looking a modern, PHP based visitor statistics tracker. As mentioned in the title it must be open source. The other features it must contain are referrer tracking, no of unique hit by daily, monthly etc, with reports.
Does anyone have any suggestions?
Thanks
For local installation using PHP, there's Piwik which is - at least a little bit - aspiring to be a Google Analytics clone. The interface looks nice, and it's under continuous development.
Piwik
The best solution you'll find is Google Analytics. Now it's not "open source" (why does it need to be?), so you may be interested in setting up something that parses your local log files, like AWStats.
AWstats link text is free and open source and arguably the best server side stats available.