<select name="status">
<option value="0" <?php if ($status == 0) { ?> selected disabled<?php } ?>>Выберите статус</option>
<option value="1" <?php if ($status == 1) { ?> selected <?php } ?> >one</option>
<option value="2" <?php if ($status == 2) { ?> selected <?php } ?> >two</option>
<option value="3" <?php if ($status == 3) { ?> selected <?php } ?> >three</option>
</select>
<select name="status">
<?PHP
foreach(["Выберите статус","One","two","three"] as $k=>$v){
$selected = $status == $k && $status == 0?"selected disabled":($status == $k?"selected":"");
echo "<option value=\"$k\" $selected >$v</option>\n";
}
?>
</select>
<select name="status">
<?PHP
foreach(["Выберите статус","One","two","three"] as $k=>$v)
echo "<option value=\"$k\" ".($status == $k && $status == 0?"selected disabled":($status == $k?"selected":""))." >$v</option>\n";
?>
</select>