一个表单 form的例子 里面有 select 多选 multiple

{
    $get = _getFormFileValue();
   $form['date']['date_start'] = array(
  '#title' => '开始时间',
  '#type' => 'date_popup', // Provided by the date_popup module
  '#date_format' => 'Y-m-d', // Uses the PHP date() format - http://php.net/manual/en/function.date.php
  '#date_year_range' => '-20:+20', // Limits the year range to the next two upcoming years
  '#required' => False,
  '#default_value' => $get['start_date'], // Default value must be in 'Y-m-d' format.
);

   $form['date1']['date_end'] = array(
  '#title' => '结束时间',
  '#type' => 'date_popup', // Provided by the date_popup module
  '#date_format' => 'Y-m-d', // Uses the PHP date() format - http://php.net/manual/en/function.date.php
  '#date_year_range' => '-20:+20', // Limits the year range to the next two upcoming years
  '#required' => False,
  '#default_value' => $get['end_date'], // Default value must be in 'Y-m-d' format.
);

  $form['date']['#attributes']['class'] = 'date_item';
  $form['date1']['#attributes']['class'] = 'date_item';

  //来源
  $form['field_qq_property'] = array(
         '#type' => 'select', 
      '#title' => '来源', 
      '#default_value' =>  $get['field_qq_property'],
      '#options' =>  $get['field_qq_properties'],
      '#attributes' => array('class'=>'search-input-div'),
      '#multiple' => true,
      '#size' => 8
    );
    
    //状态
  $form['field_chat_status'] = array(
      '#type' => 'select', 
      '#title' => '状态', 
      '#default_value' => $get['field_chat_status'],
      '#options' => $get['field_chat_statuses'],
      '#attributes' => array('class'=>'search-input-div')
  );
   
  $form['date2']['submit'] = array('#type' => 'submit', '#value' => '查询');
  $form['#method'] = 'get';

  return $form;
   
}