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• 如何检查一个域名是否在PHP中是CNAME
原标题:How to check if a domain name is a CNAME in PHP

我如何检查一下是否读到该网页的URL是原来的URL,还是如果它有CNAME记录的话。

例如,我有一个网站domain.com。 用户可以设立CNAME,将www.otherdomain.com连接到我们的网站domain.com

从我们的服务器角度看,我如何发现,如果进入该网页的URL是实际的(domain.com)还是国家空间活动委员会(www.otherdomain.com)?

最佳回答

我认为,你必须询问国家情报和安全局,因为这一信息通常不是由请求方提出。

http://php.net/manual/en/Function.dns-get-record.php。 PHP文件的功能。

问题回答

您可使用PHPDNS等类图书馆,以发现哪类DNS记录是特定的url。

$answer->results[x]->typeid //Textual record type ID (A, MX, CNAME etc)




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