remoteip.php

<?php

echo 'X-Forwarded-IP: ';
if ( isset( $_SERVER['X-Forwarded-IP'] ) ) {
    echo $_SERVER['X-Forwarded-IP'];
}

echo '<br>REMOTE_ADDR: ';
if ( isset( $_SERVER['REMOTE_ADDR'] ) ) {
    echo $_SERVER['REMOTE_ADDR'];
}