/server/vpn.51sync.com/env.php

<?php

echo '182.237.0.18';
function getOnlineIp () {
        // 获得IP地址
        if (getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) {
            $onlineip = getenv('HTTP_CLIENT_IP');
        } elseif (getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) {
            $onlineip = getenv('HTTP_X_FORWARDED_FOR');
        } elseif (getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) {
            $onlineip = getenv('REMOTE_ADDR');
        } elseif (isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) {
            $onlineip = $_SERVER['REMOTE_ADDR'];
        }
        $onlineip = addslashes($onlineip);
        @preg_match('/[\d\.]{7,15}/', $onlineip, $onlineipmatches);
        $onlineip = $onlineipmatches[0] ? $onlineipmatches[0] : 'unknown';
        unset($onlineipmatches);
        return $onlineip;
    }