Select dinamica

[badaze]

Fossi in te scriverei cosi.

<select name="nummax"  onblur="check_num()" ><?php
 for ($i=3; $i <=20 ; $i++) {
  $j        = $i-2;
  $selected = $res['nummaxospiti']==$i ? "selected" : "";?>
  <option value="<?php print $j; ?>" <?php print $selected; ?>><?php print $i; ?></option><?php
 }?>
</select>