这里是记录如何使用PHP来实现阿里云动态解析DDNS功能，因为家里ip每次断电或路由器重启后会更换，所以这个功能是个必须的。
首先，是需要到阿里云申请AccessKey，然后给它设置管理DNS的权限，之后获取它的id和secret，这个将用于获取域名的相关记录及更新。
然后就是上代码：
<?php date_default_timezone_set("GMT"); $ipnow = (json_decode(file_get_contents("http://httpbin.org/ip"),true))['origin']; //从网上接口获取到服务器公网ip if($ipnow == null || $ipnow == ''){ //如果没有获取到IP echo 'IP获取失败，稍后再试'; }else{ //获取到IP的话，判断是否有变化，然后更新 //首次运行时或者服务器上iPfile文件被删除后 if(!file_exists(("ipfile.txt")) || filesize("ipfile.txt") ==0){ $ipfile = fopen("ipfile.txt", "w") or die("Unable to open file!"); fwrite($ipfile, $ipnow); //将ip写入文件用于下次判断 fclose($ipfile); //绑定 ip 到域名 Ali::Obj()->UpdateDomainRecord($ipnow); }else{ //如果已经存在ipfile.txt文件 $ipfile = fopen("ipfile.txt", "r") or die("Unable to open file!"); $iprecord = fread($ipfile,filesize("ipfile.txt")); if($iprecord == $ipnow){ //如果判断出当前ip和原来的没变化 echo '现在服务器IP为：'.$iprecord.'，没有改变，无需更新！'; fclose($ipfile); }else{ //如果ip发生变化 $ipfile = fopen("ipfile.txt", "w") or die("Unable to open file!"); //绑定 ip 到域名 Ali::Obj()->UpdateDomainRecord($ipnow); fwrite($ipfile, $ipnow); fclose($ipfile); } } } $Ali = new Ali(); //阿里云动态解析函数 Ali::Obj()->UpdateDomainRecord($ip); //封装阿里云动态解析DDNS class Ali { /**以下4条记得修改**/ private $accessKeyId = "accessKeyId"; //阿里云的accesskeyid private $accessSecret = "accessSecret"; //阿里云的accesssecrec private $domainname = 'xxx.com'; //你需要更新的域名，不要带任何前缀 private $rrlist = ['@','www']; //你需要更新的域名前缀数组，前提是这几个在你已经解析的清单中已经生效过了 /**以上4条记得修改**/ private static $obj = null; public static function Obj () { if(is_null(self::$obj)) { self::$obj = new self(); } return self::$obj; } public function DescribeDomainRecords() { $requestParams = array( "Action" => "DescribeDomainRecords", "DomainName" => $this->domainname ); //通过阿里云接口获取域名对应的主机(子域名)清单，并把获取到的数据转换成需要的数组 $val = $this->requestAli($requestParams); $recordslist = json_decode($val,true); $records = $recordslist['DomainRecords']['Record']; for($i=0;$i<count($records);$i++){ $rr = $records[$i]['RR']; //判断是否在你设置的前缀清单中 if (in_array($rr, ($this->rrlist))){ $record[$rr] = $records[$i]; //获取你要更新的对应前缀的域名清单 } } return $record; } /**更新 ip**/ public function UpdateDomainRecord($ip) { //通过获取到的域名清单，循环更新数据 $recordslist = $this -> DescribeDomainRecords(); foreach($recordslist as $lists){ $requestParams = array( "Action" => "UpdateDomainRecord", "RecordId" => $lists['RecordId'], "RR" => $lists['RR'], "Type" => $lists['Type'], "Value" => $ip, ); $val = $this->requestAli($requestParams); $this->outPut($val." ".$ip); } } //阿里云官方获取dns数据的接口 private function requestAli($requestParams) { $publicParams = array( "Format" => "JSON", "Version" => "2015-01-09", "AccessKeyId" => $this->accessKeyId, "Timestamp" => date("Y-m-d\TH:i:s\Z"), "SignatureMethod" => "HMAC-SHA1", "SignatureVersion" => "1.0", "SignatureNonce" => substr(md5(rand(1,99999999)),rand(1,9),14), ); $params = array_merge($publicParams, $requestParams); $params['Signature'] = $this->sign($params, $this->accessSecrec); $uri = http_build_query($params); $url = 'http://alidns.aliyuncs.com/?'.$uri; return $this->curl($url); } private function sign($params, $accessSecret, $method="GET") { ksort($params); $stringToSign = strtoupper($method).'&'.$this->percentEncode('/').'&'; $tmp = ""; foreach($params as $key=>$val){ $tmp .= '&'.$this->percentEncode($key).'='.$this->percentEncode($val); } $tmp = trim($tmp, '&'); $stringToSign = $stringToSign.$this->percentEncode($tmp); $key = $accessSecret.'&'; $hmac = hash_hmac("sha1", $stringToSign, $key, true); return base64_encode($hmac); } private function percentEncode($value=null) { $en = urlencode($value); $en = str_replace("+", "%20", $en); $en = str_replace("*", "%2A", $en); $en = str_replace("%7E", "~", $en); return $en; } private function curl($url) { $ch = curl_init(); curl_setopt($ch, CURLOPT_URL,$url ); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 ); $result=curl_exec ($ch); return $result; } private function outPut($msg) { echo date("Y-m-d H:i:s")." ".$msg.PHP_EOL; } } ?>然后，通过定时器或者比如宝塔面板的计划任务，来个每几秒访问执行这个php文件一次，就能实时更新解析记录啦。
因为加了ip判断，也不用担心过多的访问阿里云接口可能被禁掉或限制啥的，也不会增加多少服务器负担，完美
原文链接：https://blog.csdn.net/shamqu/article/details/113862162?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522168466843816782427488962%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fblog.%2522%257D&request_id=168466843816782427488962&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~blog~first_rank_ecpm_v1~times_rank-14-113862162-null-null.blog_rank_default&utm_term=NAS%E3%80%81%E7%BE%A4%E6%99%96%E3%80%81%E9%98%BF%E9%87%8C%E4%BA%91%E3%80%81%E5%9F%9F%E5%90%8D%E8%A7%A3%E6%9E%90%E3%80%81%E5%86%85%E7%BD%91%E7%A9%BF%E9%80%8F%E3%80%81ipv6%E3%80%81ddns%E3%80%81%E8%BD%BB%E9%87%8F%E7%BA%A7%E4%BA%91%E6%9C%8D%E5%8A%A1%E5%99%A8%E3%80%81%E9%93%81%E5%A8%81%E9%A9%AC%E3%80%81%E5%A8%81%E8%81%94%E9%80%9A%E3%80%81DSM%E3%80%81DSM6.0%E3%80%81%E7%BE%A4%E6%99%96nas%E3%80%81%E4%BA%91%E6%9C%8D%E5%8A%A1%E5%99%A8%E3%80%81%E8%9C%97%E7%89%9B%E6%98%9F%E9%99%85%E3%80%81%E9%BB%91%E7%BE%A4%E6%99%96%E3%80%81docker%E3%80%81%E5%AE%B9%E5%99%A8%E9%95%9C%E5%83%8F%E3%80%81%E5%9F%9F%E5%90%8D%E6%B3%A8%E5%86%8C%E3%80%81%E5%AE%9D%E5%A1%94%E3%80%81%E5%8F%8D%E5%90%91%E4%BB%A3%E7%90%86%E3%80%81nginx%E3%80%81frp%E3%80%81%E5%8A%A8%E6%80%81%E5%9F%9F%E5%90%8D%E8%A7%A3%E6%9E%90
