Regex

[deshuz747]

does any one build regullar expression for user agent to find out from which OS request came from.

please help me

user agent like

Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_2; en-us) AppleWebKit/525.13 (KHTML, like Gecko) Version/3.1 Safari/525.13

[Xager]

$OS = get_browser(null, true);
$OS = $OS['platform']