Simple PHP function to get user IP address.
echo $_SERVER[‘REMOTE_ADDR’];
Advanced method to get client IP address.
if(!empty($_SERVER[‘HTTP_CLIENT_IP’]))
{
$ip = $_SERVER[‘HTTP_CLIENT_IP’];
}
elseif(!empty($_SERVER[‘HTTP_X_FORWARDED_FOR’]))
{
$ip = $_SERVER[‘HTTP_X_FORWARDED_FOR’]; //proxy case
}
else
{
$ip = $_SERVER[‘REMOTE_ADDR’];
}