Ok how can I get the ip address of a user once he votes so that he can't vote more than once

Hi!<br>
<br>
You do something like this:<br>
<br>
$ip_address = $ENV{'REMOTE_ADDR'};<br>
<br>
Hope this helps!

: Ok how can I get the ip address of a user once he votes so that he can't vote more than once<br>
: <br>
<br>
If the user has a dynamically assigned IP address,<br>
it changes each time he logs on to his ISP.<br>
<br>
Even if you give him a cookie, he could delete it, <br>
and then vote again. <br>
<br>
You could email him a "voter registration number", <br>
and validate the number before allowing the vote.<br>
<br>
Of course, if he had more than one email address, <br>
that wouldn't work either.<br>
<br>
Maybe you could have him pee in a cup, <br>
and then run a DNA test?