Download -> UASparser -> UASparser pro PHP

Array
(
    [typ] => browser
    [ua_family] => Firefox
    [ua_name] => Firefox 3.0.8
    [ua_url] => http://www.mozilla.org/products/firefox/
    [ua_company] => Mozilla Foundation
    [ua_company_url] => http://www.mozilla.org/
    [ua_icon] => firefox.png
    [ua_info_url] => http://user-agent-string.info/list-of-ua/browser-detail?browser=Firefox
    [os_family] => Windows
    [os_name] => Windows XP
    [os_url] => http://www.microsoft.com/windowsxp/default.mspx
    [os_company] => Microsoft Corporation.
    [os_company_url] => http://www.microsoft.com/
    [os_icon] => windowsxp.png
)