从域和所有可能的子域替换链接，正则表达式php

I'm cleaning an html output that contains links to domain and /or subdomains what I reached is to clean all links from main domain with:

$content = preg_replace('#<a href="https?://domain.*?>.*?</a>#i', '', $content);

as you can see here , but, is it possible to create a regex to replace all links from a domain and all its subdomains?

something like:

preg_replace('#<a href="https?://**anysubdomain**.domain.*?>.*?</a>#i', '', $content);

Try this:

preg_replace('#<a href="https?://(?:.+\.)?domain.*?>.*?</a>#i', '', $content);

The above should catch:

<a href="https://domain.com">something</a>
<a href="http://domain.net">...</a>
<a href="http://www.domain.org">...</a>
<a href="http://m.domain.com">...</a>