WEB/fixed nginx log notices

web/inc/main.php

@@ -11,7 +11,24 @@ require_once(dirname(__FILE__).'/i18n.php');
 
 
 // Saving user IPs to the session for preventing session hijacking
-$user_combined_ip = $_SERVER['REMOTE_ADDR'] .'|'. $_SERVER['HTTP_CLIENT_IP'] .'|'. $_SERVER['HTTP_X_FORWARDED_FOR'] .'|'. $_SERVER['HTTP_X_FORWARDED'] .'|'. $_SERVER['HTTP_FORWARDED_FOR'] .'|'. $_SERVER['HTTP_FORWARDED'];
+$user_combined_ip = $_SERVER['REMOTE_ADDR'];
+
+if(isset($_SERVER['HTTP_CLIENT_IP'])){
+    $user_combined_ip .=  '|'. $_SERVER['HTTP_CLIENT_IP'];
+}
+if(isset($_SERVER['HTTP_X_FORWARDED_FOR'])){
+    $user_combined_ip .=  '|'. $_SERVER['HTTP_X_FORWARDED_FOR'];
+}
+if(isset($_SERVER['HTTP_FORWARDED_FOR'])){
+    $user_combined_ip .=  '|'. $_SERVER['HTTP_FORWARDED_FOR'];
+}
+if(isset($_SERVER['HTTP_X_FORWARDED'])){
+    $user_combined_ip .=  '|'. $_SERVER['HTTP_X_FORWARDED'];
+}
+if(isset($_SERVER['HTTP_FORWARDED'])){
+    $user_combined_ip .=  '|'. $_SERVER['HTTP_FORWARDED'];
+}
+
 
 if(!isset($_SESSION['user_combined_ip'])){
     $_SESSION['user_combined_ip'] = $user_combined_ip;