循环访问Zend_Paginator的对象显示

Question

我从这个查询Zend_Paginator_Adapter_DbTableSelect对象：

public function fetchPagedTracks() { 

     $select = $this->select(Zend_Db_Table::SELECT_WITH_FROM_PART) 
         ->setIntegrityCheck(FALSE); 
     $select->join(array('ar' => 'artist'), 'ar.id = track.artist_id', 
       array('artist_name' => 'name')); 
     $select->join(array('al' => 'album'), 'al.id = track.album_id', 
       array('album_name' => 'name', 'artist_id', 'year')); 
     $select->order('artist_name', 'ASC'); 
     $select->order('album_name'); 
     $select->order('track', 'ASC'); 

     //create a new instance of the paginator adapter and return it 
     $adapter = new Zend_Paginator_Adapter_DbTableSelect($select); 

     return $adapter; 
    } 

预期和工程数据的回报，我的问题是我viewscript。我想以特定的方式迭代结果集。基本上我想让艺术家在每张专辑的子表格的顶部，并列出每首专辑的顺序。我已经完成了这个......但不正确，我不得不做我觉得是黑客，我希望能够帮助我解决它。

这里是视图：

<?php 
echo $this->paginationControl(
     $this->paginator, 'Sliding', '_paginatorControl.phtml' 
) 
?> 
<table> 
    <?php 
    foreach ($this->paginator as $track):; 
//  Zend_Debug::dump($track, ''); 
     $artist = $track->artist_name; 
     $album = $track->album_name; 
     ?> 
     <?php if ($end_artist != $artist): ?> 
      <tr> 
       <th colspan="4"><?php echo $track->artist_name ?></th> 
      </tr> 
     <?php endif ?> 
     <?php if ($end_album != $album): ?> 
      <tr> 
       <th colspan="4"><?php echo $track->album_name . ' ' . $track->year ?></th> 
      </tr> 

     <tr> 
      <th>Track #</th> 
      <th>Title</th> 
      <th>Bitrate</th> 
      <th>Play Time</th> 
     </tr> 
     <?php endif; ?> 
     <tr> 
      <td><?php echo $track->track ?></td> 
      <td><?php echo $track->title ?></td> 
      <td><?php echo $track->bit_rate . 'Kbps' ?></td> 
      <td><?php echo $this->playtime($track->play_time) ?></td> 
     </tr> 
     <?php 
     $end_artist = $track->artist_name; 
     $end_album = $track->album_name 
     ?> 

    <?php endforeach ?> 
</table> 
<?php 
echo $this->paginationControl(
     $this->paginator, 'Sliding', '_paginatorControl.phtml' 
); ?> 

最大的问题是，这种代码会导致两个公告：

注意：未定义的变量：end_artist在 E：\ WWW \ home.local \程序\模块\音乐\意见\脚本\首页\ display.phtml 上线13 ...和第18行

有问题的变量是$end_artist和$end_album对于我来说，我无法弄清楚如何以不同的方式做到这一点。建议？

P.S.该分页程序对象的转储可以在Pastbin

Answer 1

可以看出它似乎$end_artist和$end_album变量之前没有定义，把

$end_artist = ''; 
$end_album = ''; 

foreach