<?phpclass GetIp{    public static $api = ‘http://ip.taobao.com/service/getIpInfo.php?ip=‘;    public static function getAddr()    {        $ip = $_SERVER[‘REMOTE_ADDR‘];        $url = self::$api . $ip;        $json = self::curl($url);        return $json;    }    public static function getClientIp()    {        // 1 创建套接字        $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);        //2 开启一个套接字连接        socket_connect($socket, ‘ns1.dnspod.net‘, 6666);        // 3 从这个套接字中读取数据        $buf = socket_read($socket, 15);        // 4 关闭套接字        socket_close($socket);        $url = self::$api . $buf;        $json = self::curl($url);        return $json;    }    public static function curl($url)    {        $ch = curl_init();        curl_setopt($ch, CURLOPT_URL, $url);        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);        $str = curl_exec($ch);        curl_close($ch);        return $str;    }}    echo GetIp::getClientIp(); ?>