Remove double tags?

Question

PHP

It so happened that entries of this kind appeared How to correctly remove the internal tag, that is, remove < a href="/456" > and < /a >
<a href="/123"><a href="/456">dsfgdg</a></a>

Answer 1

simplehtmldom.sourceforge.net
https://code.google.com/archive/p/phpquery/

Answer 2

https://secure.php.net/manual/ru/function.strip-ta...