I happen to have grabbed this function from php.net a while back, and
have been using it since:
// by "fr600 at hotmail dot com" at http://us2.php.net/getenv
function getip()
{
if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'),
'unknown'))
$ip = getenv('HTTP_CLIENT_IP');
else if(getenv('HTTP_X_FORWARDED_FOR') &&
strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown'))
$ip = getenv('HTTP_X_FORWARDED_FOR');
else if(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'),
'unknown'))
$ip = getenv('REMOTE_ADDR');
else if(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] &&
strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown'))
$ip = $_SERVER['REMOTE_ADDR'];
else
$ip = 'unknown';
return($ip);
}
though as others have pointed out, IP address is not a very good way to
uniquely identify visitors (at least not on its own).
Lars Kristiansson wrote:
Hi!
This is probably the wrong forum. Please redirect me if im out of place.
I would like to find out what IP address my visitor uses when visiting a
php script page on my domain. This page would contain a form in which
the visitor would state his/her message.
My goal is to create purchase-orders written on unique files, and to
separate them my idea was to baptize files with the IP addresses, which
would ive each visitor an unique purchase-order...
Any hints to a newbie?
Cheers, Lars
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