Stuff
public text v1 · immutable<select name="elquesea">
<option value="1" <?php if($_POST['elquesea'] == 1){echo "selected=\"selected\"";?>>opcion1</option>
<option value="2" <?php if($_POST['elquesea'] == 2){echo "selected=\"selected\"";?>>opcion2</option>
<option value="3" <?php if($_POST['elquesea'] == 3){echo "selected=\"selected\"";?>>opcion3</option>
</select>