CWebDavBase::GetClientOS

static function GetClientOS()
{
	$clientOS = null;
	$client = $_SERVER['HTTP_USER_AGENT'];
	if (preg_match("/(msie) ([0-9]{1,2}.[0-9]{1,3})/i", $client, $match)) {
	$browser['name'] = "MSIE";
	$browser['version'] = $match[2];
	}
	if(preg_match("/linux/i", $client))
	{
		$clientOS = "Linux";
	}
	elseif(preg_match("/(windows nt)( ){0,1}([0-9]{1,2}.[0-9]{1,2}){0,1}/i", $client, $match))
	{
		if (isset($match[3]))
		{
			if ($match[3] == '5.0') $clientOS = "Windows 2000";
			elseif ($match[3] == '5.1') $clientOS = "Windows XP";
			elseif ($match[3] == '5.2') $clientOS = "Windows 2003";
			elseif ($match[3] == '6.0' && mb_strpos($client, 'SLCC1') !== false) $clientOS = "Windows Vista";
			elseif ($match[3] == '6.0' && mb_strpos($client, 'SLCC2') !== false) $clientOS = "Windows 2008";
			elseif ($match[3] == '6.0') $clientOS = "Windows Vista"; // may be 2008
			elseif ($match[3] == '6.1') $clientOS = "Windows 7";
			elseif ($match[3] == '6.2') $clientOS = "Windows 8";
			else $clientOS = "Windows";
		} else {
			$clientOS = "Windows";
		}
	}
	elseif(!!preg_match("/mac/i", $client) || !!preg_match("/darwin/i", $client))
	{
		$clientOS = "Mac";
	}
	return $clientOS;
}