获取浏览器和操作系统类型

function brower ()
{
    $brower = $_SERVER['HTTP_USER_AGENT'];
    if (preg_match('/360SE/', $brower)) {
        $brower = "360se";
    } elseif (preg_match('/Maxthon/', $brower)) {
        $brower = "Maxthon";
    } elseif (preg_match('/Tencent/', $brower)) {
        $brower = "Tencent Brower";
    } elseif (preg_match('/Green/', $brower)) {
        $brower = "Green Brower";
    } elseif (preg_match('/baidu/', $brower)) {
        $brower = "baidu";
    } elseif (preg_match('/TheWorld/', $brower)) {
        $brower = "The World";
    } elseif (preg_match('/MetaSr/', $brower)) {
        $brower = "Sogou Brower";
    } elseif (preg_match('/Firefox/', $brower)) {
        $brower = "Firefox";
    } elseif (preg_match('/MSIE\s6\.0/', $brower)) {
        $brower = "IE6.0";
    } elseif (preg_match('/MSIE\s7\.0/', $brower)) {
        $brower = "IE7.0";
    } elseif (preg_match('/MSIE\s8\.0/', $brower)) {
        $brower = "IE8.0";
    } elseif (preg_match('/MSIE\s9\.0/', $brower)) {
        $brower = "IE9.0";
    } elseif (preg_match('/Netscape/', $brower)) {
        $brower = "Netscape";
    } elseif (preg_match('/Opera/', $brower)) {
        $brower = "Opera";
    } elseif (preg_match('/Chrome/', $brower)) {
        $brower = "Chrome";
    } elseif (preg_match('/Gecko/', $brower)) {
        $brower = "Gecko";
    } elseif (preg_match('/Safari/', $brower)) {
        $brower = "Safari";
    } else
        $brower = "Unknow browser";
    return $brower;
}
function os ()
{
    $os = $_SERVER['HTTP_USER_AGENT'];
    if (preg_match('/NT\s5\.1/', $os)) {
        $os = "Windows XP";
    } elseif (preg_match('/NT\s6\.0/', $os)) {
        $os = 'Windows Vista \ server 2008';
    } elseif (preg_match('/NT\s5\.2/', $os)) {
        $os = "Windows Server 2003";
    } elseif (preg_match('/NT\s5/', $os)) {
        $os = "Windows 2000";
    } elseif (preg_match('/NT/', $os)) {
        $os = "Windows NT";
    } elseif (preg_match('/NT\s6\.1/', $os)) {
        $os = "Windows 7";
    } elseif (preg_match('/Linux/', $os)) {
        $os = "Linux";
    } elseif (preg_match('/Unix/', $os)) {
        $os = "Unix";
    } elseif (preg_match('/Mac/', $os)) {
        $os = "Macintosh";
    } elseif (preg_match('/NT\s6\.1/', $os)) {
        $os = "Windows 7";
    } else
        $os = "Unknow OS";
    return $os;
}