It is possible to get network address with PHP?

Question

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Getting Users Real IP address using PHP

I have a script on a site that saves some info about a client when he leaves the page. Is it possible to get his network address, for example 192.168.1.154.

I saw on a forum a discussion about this and they say to use $_SERVER['HTTP_X_FORWARDED_FOR'] but it is not working! It shows me my real IP.

How can I do this?

Could you explain what you mean by network address? If you mean the mac address, I think it is not possible to get the clients mac at the server side. — PCoder, Aug 28 '12 at 14:12

score 3 · Answer 1 · answered Aug 28 '12 at 14:28

3

You cannot get the inside local IP of a client if your server is outside the NAT'd network. That would be not only a security risk, but defeat the purpose of NAT.

You can, if you want his local NAT'd IP, run a javascript, something like this may work:

function myIP(){
  var yip2=java.net.InetAddress.getLocalHost(); 
  var yip=yip2.getHostAddress();
  return yip;
}//end myIP

alert("your machine's local network IP is "+ myIP())

answered Aug 28 '12 at 14:28

Mike Mackintosh

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question is regarding PHP..!! – talha2k Aug 28 '12 at 14:32
3

@AlphaMale which it cant be done! Which is why a solution, which WILL work, was offered. – Mike Mackintosh Aug 28 '12 at 14:33
This doesn't work on my chrome, and on my Firefox I get _your machine's local network IP is 127.0.0.1_ which obviously is not my NAT ip – user454322 Oct 20 '12 at 20:03

score 2 · Answer 2 · answered Aug 28 '12 at 14:12

2

$_SERVER['REMOTE_ADDR']

Docs http://php.net/manual/en/reserved.variables.server.php

If client will visit you from local network you gonna get 192.168.*.*, otherwise remote ip like 35.88.33.11

answered Aug 28 '12 at 14:12

Peter

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but that shows me current ip also – Mihai Aug 28 '12 at 14:13

talha2k · Answer 3 · 2012-08-28T14:55:42.833

Use this:

<?php  

   echo $_SERVER['REMOTE_ADDR'];  //ip of visitor - you need this

   echo $_SERVER['SERVER_ADDR'];  //ip of server

?>

Using JSON you can also get the client ip by using the following code:

$(document).ready(function(){

    //Service 1
    $.getJSON( "http://smart-ip.net/geoip-json?callback=?",
            function(data){
                alert( data.host);
            }
    );

    //Service 2
    $.getJSON( "http://jsonip.appspot.com/?callback=?",
            function (json){
                alert( "User ip: " + json.ip); // alerts the ip address
            }
    );

});

Hope this helps.

score 0 · Answer 4 · edited Mar 20 '17 at 10:18

This is impossible serverside. Address like 192.168.1.154 are not routable so the server doesn't know anything about them. It may be possible that some routers set the HTTP_X_FORWARDED_FOR header, but you shouldn't count on it. Unless the script is running only on the local network, like Peter Szymkowski suggests.

see https://superuser.com/questions/63124/is-it-possible-to-get-the-nat-ip-address for more info about NAT

score 0 · Answer 5 · answered Aug 28 '12 at 14:16

0

I would see which parameter of var_dump($_SERVER); displays your network IP.

answered Aug 28 '12 at 14:16

Kermit

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It is possible to get network address with PHP?

5 Answers5