DomDocument and special characters

Question

This is my code:

$oDom = new DOMDocument();
$oDom->loadHTML(\"èàéìòù\");
echo $oDom->saveHTML();

This is the output:

Answer 1

I don't know why the marked answer didn't work for my problem. But this one did.

ref: https://www.php.net/manual/en/class.domdocument.php

LoadHTML($content, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);

            // do whatever you want to do with this code now

?>