smarty中ifelse、foreach以及获取数组中键值名的一个实例

<{if empty($history)}>
  <tr>
    <td colspan="6">Not any records!</td>
  </tr>
<{else}>
  <{foreach from=$history item=item}>
    <tr>
      <td><{$item.id}></td>
      <td>
        <div style="max-width:700px;overflow:hidden;text-overflow:ellipsis; ">
        <a href="#">
        Keywords:<{$item.keywords}><br>
        Size:<{$item.size}><br>
        <{foreach from=$item.options key=key item=option}>
          <{$key}>:<{$option}><br>
        <{/foreach}>
      </td>
      <td><{$item.num}></td>
      <td><{$item.create_time}></td>
      <td><{$item.last_process}></td>
      <td>
        <span class="label 
          <{if $item.status eq ‘new‘}>
                label-primary
          <{else}>
                label-success
          <{/if}>">
          <{$item.status}>
        </span>
      </td>
      <td>
        <a href="#" class="btn btn-danger btn-xs"><i class="fa fa-trash-o"></i>Delete</a>
        <a href="#" class="btn btn-primary btn-xs"><i class="fa fa-file-text"></i>Report</a>
      </td>
    </tr>
  <{/foreach}>
<{/if}>