client information

doobster

Hello,

I am currently working on making my site more secure. To do this I want to retrieve more information about my members who are logging in.

We of course have a privacy policy and are not using this for other means.

So far the only system variables that I have found and am using are retrieving the client's IP address and using that on a reverse look up to get the hostname.

My question is there more system variables that can provide me with more information? Such as the computer id of their computer or more network information?

Any leads or code appreciated.

Weedpacket

Okay, where are they logging in from? Is this an intranet? Because if not, IP is pretty much all you'll be getting.

doobster

They would be logging in from my web site through a form and it is not an intranet.

doobster

If you can't do it in PHP is there a way to retrieve more information with Javascript then write it to a database?

thefisherman

Well,

This you could possibly use:

$ip=$REMOTE_ADDR;

which will give you the ip-address of your visitor,

and this:

$hostname=gethostbyaddr($REMOTE_ADDR);

which will give you the hostname of your visitor.
Change $REMOTE_ADDR in this sample to $ip

thefisherman

Shrike

There are some IP mapping services I think so you might be able to get geographic location. You can get user agent, operating system etc from PHP's global variables or Javascript if you prefer. http_referer could tell you where they have been before.

As always you can't trust these things to be true.

Weedpacket

There's also $_SERVER['HTTP_USER_AGENT'] which might give some amusing (but ultimately irrelevant) info about OS and browser version, but that's even more likely to be bogus.