Users IP - Submit

[mynamesleo]

Hi all,

Is it alot of work to get a users IP from a form? for example, in a basic form which would send
the string from a textbox to a text file somewhere when Submit is pressed, how could I go about
sending the users IP also? so string:ip would be sent to the text file.

[joshi_v]

First get the IP address of the user and then assign it to a variable.

[code]
<?php

$domain = GetHostByName($REMOTE_ADDR);

?>
[/code]

pass this value to a  hidden variable.

[code]

<input type="hidden" name="domain" value="<?php echo $domain;?>"

[/code]

when u submit the form this value is also getting passed. so u can use there..

another option is , storing IP address in a session variable. so you can use any where in your scripts.

[mynamesleo]

wow I was expecting a messy job, thanks!!!

[toplay]

The $REMOTE_ADDR varible relies on register_globals to be on. Use $_SERVER['REMOTE_ADDR'] variable instead.

If you just want to capture the persons, IP address then there's no reason to put it in the form (as a hidden field) to begin with. Just grab it after the form is submitted.

Please note that getting the real IP address is a little more complicated that just using that one server variable (because of proxy use).

[brendandonhue]

Putting it in a hidden form field allows to the user to submit any value they want. You should grab $_SERVER['REMOTE_ADDR'] directly in your script.

[wildteen88]

Also keep in mind $_SERVER['REMOTE_ADDR'] will not get the users true IP address if they being a proxy or if their ISP dishes out dynamic IP Addresses.

[brendandonhue]

It will always give you the IP that your server is communicating with, not sure what else you would expect.