我正在使用一个名为WP Polls的插件，我需要查看所有不同的IP来控制投票人。因此，在这个插件中有一个获取ips:的功能
### Function: Get IP Address
if(!function_exists('get_ipaddress')) {
function get_ipaddress() {
if (empty($_SERVER["HTTP_X_FORWARDED_FOR"])) {
$ip_address = $_SERVER["REMOTE_ADDR"];
} else {
$ip_address = $_SERVER["HTTP_X_FORWARDED_FOR"];
}
if(strpos($ip_address, ',') !== false) {
$ip_address = explode(',', $ip_address);
$ip_address = $ip_address[0];
}
return esc_attr($ip_address);
}
}
此函数从REMOTE_ADDR中查找地址，但此标头包含服务器的相同ip。所以，我不能以IP来限制投票。我也尝试过，通过ECHO在同一功能中查看所有标题，以检查所有可能性：
echo "HTTP_CLIENT_IP: " . $_SERVER["HTTP_CLIENT_IP"];
echo "HTTP_X_FORWARDED_FOR: " . $_SERVER["HTTP_X_FORWARDED_FOR"];
echo "HTTP_X_FORWARDED: " . $_SERVER["HTTP_X_FORWARDED"];
echo "HTTP_X_CLUSTER_CLIENT_IP: " . $_SERVER["HTTP_X_CLUSTER_CLIENT_IP"];
echo "HTTP_FORWARDED_FOR: " .$_SERVER["HTTP_FORWARDED_FOR"];
echo "REMOTE_ADDR: " . $_SERVER["REMOTE_ADDR"];
echo "REMOTE_HOST: " . $_SERVER["REMOTE_HOST"];
echo "HTTP_X_REAL_IP: " . $_SERVER["HTTP_X_REAL_IP"];
echo "REMOTE_HOST: " . $_SERVER["REMOTE_HOST"];
echo "REQUEST_URI: " . $_SERVER["REQUEST_URI"];
但只有在我的REMOTE_ADDR中，我才能看到一些东西（来自服务器的ip）。
我认为这个问题的解决方案是在Nginx设置中。当我使用APACHE代替Nginx时，从REMOTE_ADDR获得正确的信息，一切正常。
有人能解决这个问题吗？
Nginx通过代理运行PHP，因此当您尝试访问REMOTE_ADDR时，PHP会将Nginx视为远程客户端，从而为您提供自己的IP地址。若要访问此信息，您需要通过代理对其进行重写。
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
请参阅https://rtcamp.com/tutorials/nginx/forwarding-visitors-real-ip/了解更多信息。
在我的设置中，我通过spawn-fcgi使用fastcgi，并包含一个名为fastcgi_params的文件，该文件覆盖了代理中丢失的许多$_SERVER变量。如果有用的话，该文件的内容如下。
fastcgi_params:
fastcgi_param QUERY_STRING $query_string; fastcgi_param REQUEST_METHOD $request_method; fastcgi_param CONTENT_TYPE $content_type; fastcgi_param CONTENT_LENGTH $content_length; fastcgi_param SCRIPT_NAME $fastcgi_script_name; fastcgi_param REQUEST_URI $request_uri; fastcgi_param DOCUMENT_URI $document_uri; fastcgi_param DOCUMENT_ROOT $document_root; fastcgi_param SERVER_PROTOCOL $server_protocol; fastcgi_param HTTPS $https if_not_empty; fastcgi_param GATEWAY_INTERFACE CGI/1.1; fastcgi_param SERVER_SOFTWARE nginx/$nginx_version; fastcgi_param REMOTE_ADDR $remote_addr; fastcgi_param REMOTE_PORT $remote_port; fastcgi_param SERVER_ADDR $server_addr; fastcgi_param SERVER_PORT $server_port; fastcgi_param SERVER_NAME $server_name; # override for wp-polls plugin fastcgi_param HTTP_X_FORWARDED_FOR $remote_addr; # PHP only, required if PHP was built with --enable-force-cgi-redirect fastcgi_param REDIRECT_STATUS 200;
_.php.conf:-包含在我的服务器块中，用于WordPress中的PHP处理。
location ~ '.php$ { # proxy buffers - no 502 errors! proxy_buffer_size 128k; proxy_buffers 4 256k; proxy_busy_buffers_size 256k; proxy_ignore_client_abort on; # fastcgi buggers - no 502 errors! fastcgi_buffering on; fastcgi_buffer_size 16k; fastcgi_buffers 16 16k; # max timeouts (should match php.ini) fastcgi_connect_timeout 600s; fastcgi_send_timeout 600s; fastcgi_read_timeout 600s; # index page fastcgi_index index.php; # proxy request to spawn-fcgi running on port 12321 fastcgi_pass localhost:12321; # default fastcgi_params include fastcgi_params; # override fastcgi_params fastcgi_param SERVER_NAME $host; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; break; }