Str_Replace MS Word Elements

[Mr. Tech]

I have user submitted articles on my site. Most of the time they are copied from MS Word and have code such as “, ‘ and , in it. XHTML doesn't like these. Is there any way tor eplace them? I tried this but it isn't working:

$article = str_replace("“", "\"", $article);

[k0ng]

Try single quotes around the stuff you'd like replaced instead.