PHP获取用户的真实IP

获取用户的真实  IP
[code lang=”php”]
function getRealIpAddr()
{
if (!emptyempty($_SERVER[‘HTTP_CLIENT_IP’]))
{
$ip=$_SERVER[‘HTTP_CLIENT_IP’];
}
elseif (!emptyempty($_SERVER[‘HTTP_X_FORWARDED_FOR’]))
//to check ip is pass from proxy
{
$ip=$_SERVER[‘HTTP_X_FORWARDED_FOR’];
}
else
{
$ip=$_SERVER[‘REMOTE_ADDR’];
}
return $ip;
}

[/code]
语法：
[code lang=”php”]
<?php
$ip = getRealIpAddr();
echo $ip;
?>

[/code]