Handling SGML code 146

Why doesn't htmlentities do it?

[ianevans]

I was grabbing some cd tracks data from Amazon's XML service the other day and my page would no longer validate.

The error given was a non sgml character code 146, the MS Word apostrophe.

I thought an htmlentities($str, ENT_QUOTES) runthrough would fix it but it doesn't.

What should I do?

[jatar_k]

what about using str_replace [php.net] or preg_replace [php.net] to do it?