获取真实ip

function getAddr()
{
    if (!empty($_SERVER[‘HTTP_CLIENT_IP‘])) {
        $ip=$_SERVER[‘HTTP_CLIENT_IP‘];
    } elseif (!empty($_SERVER[‘HTTP_X_FORWARDED_FOR‘])) {
        $ip=$_SERVER[‘HTTP_X_FORWARDED_FOR‘];
    } else {
        $ip=$_SERVER[‘REMOTE_ADDR‘];
    }
    return $ip;
}
echo getAddr();