statistics functions
- get_browser_ - get browser by user agent signature
- get_os_ - get OS by user agent signature
get_browser_($user_agent)
get browser by user agent signature
get_browser_('Mozilla/5.0 (Windows; U; Windows NT 5.1; nl; rv:1.8) Gecko/20051107 Firefox/1.5') // Mozilla Firefox
get_os_($user_agent)
get OS by user agent signature
get_os_('Mozilla/5.0 (Windows; U; Windows NT 5.1; nl; rv:1.8) Gecko/20051107 Firefox/1.5') // Windows XP
