<?php
function ip()
{
    $ipaddress = '';
    if (getenv('HTTP_CLIENT_IP')) {
        $ipaddress = getenv('HTTP_CLIENT_IP');
    } elseif (getenv('HTTP_X_FORWARDED_FOR')) {
        $ipaddress = getenv('HTTP_X_FORWARDED_FOR');
    } elseif (getenv('HTTP_X_FORWARDED')) {
        $ipaddress = getenv('HTTP_X_FORWARDED');
    } elseif (getenv('HTTP_FORWARDED_FOR')) {
        $ipaddress = getenv('HTTP_FORWARDED_FOR');
    } elseif (getenv('HTTP_FORWARDED')) {
        $ipaddress = getenv('HTTP_FORWARDED');
    } elseif (getenv('REMOTE_ADDR')) {
        $ipaddress = getenv('REMOTE_ADDR');
    } else {
        $ipaddress = 'UNKNOWN';
    }
    return $ipaddress;
}
