如何从php中的数据库表创建表单下拉列表？

Question

I am trying to code a function which creates a dropdown of school names selected from a database. It is doing fine creating a dropdown but it is not putting anything in the dropdown. Here is the code:

function schoolDD($name, $selected){
   $select = '';
   if( $selected != null )
   {
      $select = $selected;
   }

     $qry = "select *   
             from   school
             order by name, id
             where display = 'Y'";

     $schools = _execQry($qry);


   $html = '<select name="'.$name.'" >';

   foreach( $schools as $s ){
      $html .= '<option value="'. $s['id'] .'"';
      if( $select == $s['name'] ){
         $html .= 'selected="selected"';
      }
      $html .= '>'. $s['name'] . '</option>';

   }
   $html .= '</select>';
   return $html;
}

Answer 1

Problem solved. It was because in the query I had order before where. It should have been:

$qry = "select *   
             from   school
             where display = 'Y'
             order by name, id";

Not:

 $qry = "select *   
             from   school
             order by name, id
             where display = 'Y'";