Question

如何准确获取用户真实ip php

Answer 1

function GetIP() {
  if (getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'),'unknown')) {
        $onlineip = getenv('HTTP_CLIENT_IP');
      } elseif (getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'),'unknown')) {
        $onlineip = getenv('HTTP_X_FORWARDED_FOR');
      } elseif (getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'),'unknown')) {
        $onlineip = getenv('REMOTE_ADDR');
      } elseif (isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'],'unknown')) {
        $onlineip = $_SERVER['REMOTE_ADDR'];
    }
  return $onlineip;
}