DNSpod 免费版 TTL 最短时间是 10 分钟，配合宝塔的计划任务，挂个间隔 10 分钟的任务刚刚好。

效果图

计划任务

把脚本放到合适的路径，添加一个 10 分钟的计划任务

• /usr/bin/php /www/wwwroot/dnspod/main.php

源代码

<?php// Dnspod token，获取地址 https://console.dnspod.cn/account/token/token$token     = '235678,f485d8729df9397c719e0fe8f5802xxx';// 需要解析的域名$domain    = 'xxx.com';// 解析记录$record    = 'panel.nas';$api       = 'https://dnsapi.cn/Record.List';$post      = [    'login_token' => $token,    'format'      => 'json',    'lang'        => 'cn',    'domain'      => domain,];$record_id = null;$res       = getCurl($api, ['post' => $post]);$data      = json_decode($res, true);// 获取记录IDforeach ($data['records'] as $itm) {     if ($record == $itm['name']) {         $record_id = $itm['id'];    }}if (empty($record_id)) {     exit("记录 [$record] 未找到，请检查！\n");}// 获取公网IP$ip = file_get_contents('https://www.bt.cn/Api/getIpAddress');if (empty($ip)) {     exit("公网IP获取失败 \n");}echo "当前公网IP：$ip \n";// 修改域名A记录$api  = 'https://dnsapi.cn/Record.Modify';$post = [    'login_token' => $token,    'format'      => 'json',    'lang'        => 'cn',    'domain'      => $domain,    'record_id'   => $record_id,    'sub_domain'  => $record,    'record_type' => 'A',    'record_line' => '默认',    'value'       => $ip,    'mx'          => 20,];$res  = getCurl($api, ['post' => $post]);$data = json_decode($res, true);if ($data['status']['code']) {     echo "修改成功：{ $data['status']['message']} \n";}function getCurl($url, $opt = []){     $cookie = '';    if (is_array($opt['cookie'])) {         foreach ($opt['cookie'] as $k => $v) {             $cookie .= $k . '=' . $v . '; ';        }    }    $cookie = (mb_substr($cookie, 0, mb_strlen($cookie) - 2));    $ch = curl_init();    curl_setopt($ch, CURLOPT_URL, $url);    curl_setopt($ch, CURLOPT_COOKIE, $cookie);    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);    curl_setopt($ch, CURLOPT_ENCODING, '');    curl_setopt($ch, CURLOPT_HTTPHEADER, ["Expect:"]);    curl_setopt($ch, CURLOPT_NOBODY, $opt['nobody']);    curl_setopt($ch, CURLOPT_HEADER, $opt['header'] ?? false);    curl_setopt($ch, CURLOPT_HTTPHEADER, $opt['headers'] ?? []);    curl_setopt($ch, CURLOPT_TIMEOUT_MS, $opt['rtime'] ?? 10000);    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT_MS, $opt['ctime'] ?? 10000);    curl_setopt($ch, CURLOPT_REFERER, $opt['refer'] ?? 'https://user.qzone.qq.com/');    curl_setopt($ch, CURLOPT_USERAGENT,        'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36');    if (isset($opt['post'])) {         curl_setopt($ch, CURLOPT_POST, 1);        curl_setopt($ch, CURLOPT_POSTFIELDS, is_array($opt['post']) ? http_build_query($opt['post']) : $opt['post']);    }    if (isset($opt['proxy']) && is_array($opt['proxy'])) {         curl_setopt($ch, CURLOPT_PROXY, $opt['proxy']['ip']);        curl_setopt($ch, CURLOPT_PROXYPORT, $opt['proxy']['port']);    }    $res   = curl_exec($ch);    $error = curl_error($ch);    $code  = curl_getinfo($ch, CURLINFO_HTTP_CODE);    curl_close($ch);    if ($opt['detail']) {         return ['code' => $code, 'error' => $error, 'resp' => $res,];    }    return $res;}