/**
 * 获得用户的真实ip函数
 *
 * @param 
 * @arrange (512.笔记) jb51.cc
 **/
function getRealIpAddr()
{
if (!empty($_SERVER['HTTP_CLIENT_IP'])) //check ip from share internet
{
 $ip=$_SERVER['HTTP_CLIENT_IP'];
}
elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))
//to check ip is pass from proxy
{
  $ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
}
else
{
 $ip=$_SERVER['REMOTE_ADDR'];
}
 return $ip;
}


/***   代码来自编程之家 jb51.cc（jb51.cc）   ***/