prova a usare questa struttura ...

Codice PHP:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<
html xmlns="http://www.w3.org/1999/xhtml">
    <
head>
        <
meta http-equiv="content-type" content="text/html; charset=utf-8" />
    </
head>

    <
body>
    </
body>
</
html