获取当前IP地址

获取当前的IP地址

function getIp()
{
   static $realip;
   if (isset($_SERVER)){
      if (isset($_SERVER["HTTP_X_FORWARDED_FOR"])){
         $realip = $_SERVER["HTTP_X_FORWARDED_FOR"];
      } else if (isset($_SERVER["HTTP_CLIENT_IP"])) {
         $realip = $_SERVER["HTTP_CLIENT_IP"];
      } else {
         $realip = $_SERVER["REMOTE_ADDR"];
      }
   } else {
      if (getenv("HTTP_X_FORWARDED_FOR")){
         $realip = getenv("HTTP_X_FORWARDED_FOR");
      } else if (getenv("HTTP_CLIENT_IP")) {
         $realip = getenv("HTTP_CLIENT_IP");
      } else {
         $realip = getenv("REMOTE_ADDR");
      }
   }
   return $realip;
}