local ip, or whatever ip is unique to every computer, iunno

[gsquare567]

does

$_SERVER['REMOTE_ADDR'];

give the IP address that is different for every computer? im looking for the type of IP that is unique for every computer and does not change.

[MadTechie]

what your looking for Doesn't exist,

 

the closest your get is the MAC address (serial number of the network card) but they can be spoofed!

[gsquare567]

so is the way i'm checking the IP now correct? or how about an IP unique to every computer that can change?

 

on-the-side question1: how do i tab in an echo? <t> doesnt work.

on-the-side question2: how do i get the length of a varchar?

[MadTechie]

your IP check is ok

or

can't be done

 

side 1 try \t

side 2 try strlen("hello");

[gsquare567]

im sure it can, because i just saw after all my posts this site has my IP address! and i tried strlen("$row['IP']") but it doesnt work =S

 

EDIT:

changed to $ip = $row['IP'];
if(strlen($ip) == 0)

and works! so now down to one question: how do i get the IP like this site does?

[AndyB]

so now down to one question: how do i get the IP like this site does?

 

Exactly what you posted in the starter post of this thread.

[gsquare567]

no that one returns ###.###.#.#, the one on this site is ##.###.##.##

[AndyB]

What?  There's only one way to get the IP of the remote agent, and you already posted it.  If you happen to be surfing via some proxy or spoofing your IP then you're not going to get the 'real' IP of the computer you are using.

[bobleny]

Thats me! I haven't seen a site with my real ip address...

 

This is a cool site though...

http://www.whatismyipaddress.com/

 

lol it's completely wrong on where I live though.

[per1os]

On a side note EVERY IP changes. There are ways to get a local IP of a computer on a network. Check the php.net functions. I know some people created it.

 

If the IP does not change it is static, but that does not mean it WILL not change.

 

Let's say I am logging in from a school computer, if you ban that IP every person in that school is banned.

 

IP's only go so far. That and they can be spoofed. It sucks yes, but oh well. If I really wanted to, I can easily go in through a proxy and bam have access to you site with a new IP.

 

That is just how IP's work.

 

Why are you looking into this, for banning of users?

[gsquare567]

precisely

[Dragen]

find another way to ban than by ip... It's a pain, because it blocks off so many other legitimate users as well as the few who spam etc.

 

Try image captcha or something.

[gsquare567]

how would that help? im tryin to ban humans lol

[tcollie]

I just glanced at your post, but I'm guessing that when you run the code

 

$_SERVER['REMOTE_ADDR'];

 

it shows your IP address as 127.0.0.1.  Am I correct?

 

or 192.168.10.1 or something like that?

[gsquare567]

127.0.0.1

howd u know?

[tcollie]

b/c when you're working on your own server (dev machine) that isn't actually an online server, it will show that as your IP.  That's your localhost IP on your computer.  If you upload your script to an actual web server, it will show your IP in the same manner as you see on here.

[gsquare567]

dangit, well how does THIS SITE get the ip, because it gets it somehow! man this is tough, i searched throughout the directories and this is the only 1 i found with IP

[kenrbnsn]

Here's the code I use which tries to get the "true" address, but it doesn't always work:

<?php
	if ($_SERVER["HTTP_X_FORWARDED_FOR"] != ""){
        		$IP = $_SERVER["HTTP_X_FORWARDED_FOR"];
        		$proxy = $_SERVER["REMOTE_ADDR"];
        		$host = @gethostbyaddr($_SERVER["HTTP_X_FORWARDED_FOR"]);
	}else{
        		$IP = $_SERVER["REMOTE_ADDR"];
        		$host = @gethostbyaddr($_SERVER["REMOTE_ADDR"]);
	}
?>

 

Ken

[gsquare567]

cool, all that showed up for me was my host

[AndyB]

cool, all that showed up for me was my host

 

Not 72.136.77.xx ??

[gsquare567]

CPE0006259b85d7-CM014380004733.cpe.net.cable.rogers.com

[AndyB]

And your IP is still displayed here.

[kenrbnsn]

That's because I use the funtion gethostbyaddr() to try to get the full qualified domain name. If you just want the IP, change the code accordingly:

<?php
	if ($_SERVER["HTTP_X_FORWARDED_FOR"] != ""){
        		$IP = $_SERVER["HTTP_X_FORWARDED_FOR"];
        		$proxy = $_SERVER["REMOTE_ADDR"];
        		$host = $_SERVER["HTTP_X_FORWARDED_FOR"];
	}else{
        		$IP = $_SERVER["REMOTE_ADDR"];
        		$host = $IP;
	}
?>

 

Ken

[trq]

Are you echoing $host or $IP from the above code snippet?

[gsquare567]

echo "HOST: " . $host . "<br>";
echo "PROXY: " . $proxy . "<br>";
echo "IP: " . $ip . "<br>";

 

returns

HOST: **.***.**.**
PROXY:
IP: