opsi yang sudah dipilih pada pemuatan halaman di daftar drop-down dan juga dapat diubah

<div class="search_bar1_txt">State:</div>
 <div class="search_bar1">
  <select class="styled" name="state_trainer">
   <option <?if($value['city']=='-select-') echo "selected";?>>-select-</option>
   <option <?if($value['city']=='washington') echo "selected";?>>washington</option>
   <option <?if($value['city']=='perth') echo "selected";?>>perth</option>
   <option <?if($value['city']=='delhi') echo "selected";?>>delhi</option>
   <option <?if($value['city']=='london') echo "selected";?>>london</option>
  </select>
 </div>
</div>