in altenativa puoi usare echo
Codice PHP:
echo "<table width=\"450\" border=\"1\">
<th scope=\"col\" bgcolor=\"#CCCCCC\" >Orario</th>
<th scope=\"col\" bgcolor=\"#FFFFF\" >lun</th>
<th scope=\"col\" bgcolor=\"#FFFFF\" >mar</th>
<th scope=\"col\" bgcolor=\"#FFFFF\" >mer</th>
<th scope=\"col\" bgcolor=\"#FFFFF\" >gio</th>
<th scope=\"col\" bgcolor=\"#FFFFF\" >ven</th>
<th scope=\"col\" bgcolor=\"#FFFFF\" >sab</th>
<th scope=\"col\" bgcolor=\"#FFFFF\" >dom</th>
</table>"

Ps. a me piace più echo XD