how to keep current select value after submit

[eluser]memVN[/eluser]
hi you

Code:

<select class="default" name="diadiem">
<option value="--">--</option>;
   &lt;?php  
      foreach($tinhthanhpho as $diadiem)
         {
               echo "<option value='".$diadiem['id']."' >".$diadiem['ten_tinh']."</option>";
                                }                      
     ?&gt;
</select>

Please change to

Code:

<select class="default" name="diadiem">
<option value="--">--</option>

    &lt;?php foreach($tinhthanhpho as $diadiem) : ?&gt;
          <option value="&lt;?=$diadiem['id']?&gt;" &lt;?php if(@$_POST['diadiem'] == $diadiem['id']) echo "selected=selected"; ?&gt;>&lt;?=$diadiem['ten_tinh']?&gt;</option>                    
    &lt;?php endforeach ?&gt;
</select>