valor nulo de REMOTE_ADDR

[david_M_G]

Prueba con esta función

Código PHP:

   function extract_ip(){
        
                if(getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown")){
                 $ip = getenv("HTTP_CLIENT_IP");
        }
           elseif(getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown")){
               $ip = getenv("HTTP_X_FORWARDED_FOR");
           }
           elseif(getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown")){
               $ip = getenv("REMOTE_ADDR");
           }
           elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], "unknown")){

               $ip = $_SERVER['REMOTE_ADDR'];
           }
           else {
               $ip = "Unknown";
           }
          return $ip;
            }  
   

Código PHP:

  extract_ip();