How does Wordpress support Unicode?
<p>I've been looking through Wordpress' codes and they're mostly using PHP's regular string functions, like strlen, strpos, etc. Yet I know Wordpress supports utf8, so how does it do that?</p>

<p>Does it overload the regular string functions with multibyte string functions?</p>

<p>If so, is that a good idea in practice? If not, then how do they do it?</p>
