嵌套循环困难 [英] nested for loop difficulties

问题描述

我需要打印出一个封装了三个li的div，当我在一个DB中运行一个列表时。当我使用bootstrap时，我需要为.span4的第三列之后的每一行分配一个.row流体，但是我在for循环工作时遇到了一些麻烦..这里是未触及的代码： / p>

 < div class =row-fluid>'
< ul class =thumbnails> （$ i = 0; $ i< count（$ rows）; $ i + = 1）{
？> 
<？php 
 
 <！ - 这就是为什么按程序排序不起作用 -  ID不是我所需要的 - > 
< li class =span4id =<？php echo $ rows [$ i] ['Class'];？>> 
< div class =thumbnail> 
< img src =http://placehold.it/320x200alt =ALT NAME> 
< div class =caption> 
< h3><？php echo $ rows [$ i] ['Title']; ？>< / H3> 
 <？php if（！empty（$ rows [$ i] [DateSold]））{？> 
 <？php}？> 
< p>卖家：<？php echo $ rows [$ i] ['FirstName']。 。 $行[$ i]于[名字]; ？> < / p为H. 
< p>电子邮件：<？php echo $ rows [$ i] ['Email']; ？>< / p为H. 
< p>成本：<？php echo $ rows [$ i] ['Cost']; ？>< / p为H. 
< p>条件：<？php echo $ rows [$ i] ['BookCondition']; ？>< / p为H. 
< p align =center> 
 <？php echo'< a href =＃myModal'。$ i。'class =btn btn-primary btn-blockdata-toggle =modal>查看更多信息< / a><> 
< / p> 
< / div> 
< / div> 
< / li> 
 <！ -  Modal  - > 
 <？php echo'< div id =myModal'。$ i。'class =modal hide fadetabindex = -  1role =dialogaria-labelledby =myModalLabel -hidden = 真 >'; ？> 
< div class =modal-header> 
 < h3 id =myModalLabel>图书信息< / h3> 
< / div> 
< div class =modal-body> 
< p>标题：<？php echo $ rows [$ i] ['Title']; ？> < / p为H. 
< p>卖家：<？php echo $ rows [$ i] ['FirstName']。 。 $行[$ i]于[名字]; ？> < / p为H. 
< p>电子邮件：<？php echo $ rows [$ i] ['Email']; ？>< / p为H. 
< p>电话：<？php echo $ rows [$ i] ['PhoneNumber']; ？>< / p为H. 
< p>条件：<？php echo $ rows [$ i] ['BookCondition']; ？>< / p为H. 
< p>添加的日期：<？php echo $ rows [$ i] ['DateAdded']; ？>< / p为H. 
< p>类：<？php echo $ rows [$ i] ['Class']; ？>< / p为H. 
< p>成本：<？php echo $ rows [$ i] ['Cost']; ？>< / p为H. 
< / div> 
< div class =modal-footer> 
< button class =btndata-dismiss =modalaria-hidden =true>关闭< /按钮> 
< / div> 
< / div> 
<？php 
} 
？> 
< / ul> 
< / div> 
  

在数据库每打印三次后，我需要列表项的顶级父级div在第二次读取中，似乎更像是每隔三个LI在一个单独的DIV和UL中。在这种情况下，您可以使用 array_chunk 。

 <？php $ chunks = array_chunk（$ rows，3）; 
 for（$ i = 0; $ i  {
？> < div class =row-fluid>< ul class =thumbnails> <？php 
 for（$ j = 0; $ j< count（$ chunks [$ i]）; $ j ++）
 {
？>在这里做你的LI<？php 
} 
？> < / UL>< / DIV> <？php 
} 
  

I need to print out a div that encapsulates three li's in them as I run through a list in a DB. As I am using bootstrap, I need to div with a .row-fluid for every row after the third column of .span4, but I'm having a bit of trouble getting the for loop working.. here is the untouched code:

<div class="row-fluid">'
          <ul class="thumbnails">
            <?php 
              for($i=0; $i<count($rows); $i+=1){ 
            ?>
            <!-- This is why sort by programme doesn't work - ID is not what I need -->
            <li class="span4" id="<?php echo $rows[$i]['Class']; ?>">
              <div class="thumbnail">
                <img src="http://placehold.it/320x200" alt="ALT NAME">
                <div class="caption">
                  <h3><?php echo $rows[$i]['Title']; ?></h3>
                  <?php if(!empty($rows[$i]["DateSold"])){ ?>
                    <span class="label label-warning" style="margin-bottom: 10px;">Book has been sold!</span>
                  <?php } ?>
                  <p>Seller: <?php echo $rows[$i]['FirstName'] . " " . $rows[$i]['LastName']; ?> </p>
                  <p>Email: <?php echo $rows[$i]['Email']; ?></p>
                  <p>Cost: <?php echo $rows[$i]['Cost']; ?></p>
                  <p>Condition: <?php echo $rows[$i]['BookCondition']; ?></p>
                  <p align="center">
                    <?php echo '<a href="#myModal' . $i . '" class="btn btn-primary btn-block" data-toggle="modal">View More information</a>' ?>
                  </p>
                </div>
              </div>
            </li> 
            <!-- Modal -->
              <?php echo'<div id="myModal' . $i . '" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">'; ?>
                <div class="modal-header">
                  <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
                  <h3 id="myModalLabel">Book information</h3>
                </div>
                <div class="modal-body">
                  <p>Title: <?php echo $rows[$i]['Title']; ?> </p>
                  <p>Seller: <?php echo $rows[$i]['FirstName'] . " " . $rows[$i]['LastName']; ?> </p>
                  <p>Email: <?php echo $rows[$i]['Email']; ?></p>
                  <p>Phone: <?php echo $rows[$i]['PhoneNumber']; ?></p>
                  <p>Condition: <?php echo $rows[$i]['BookCondition']; ?></p>
                  <p>Date added: <?php echo $rows[$i]['DateAdded']; ?></p>
                  <p>Class: <?php echo $rows[$i]['Class']; ?></p>
                  <p>Cost: <?php echo $rows[$i]['Cost']; ?></p>
                </div>
                <div class="modal-footer">
                  <button class="btn" data-dismiss="modal" aria-hidden="true">Close</button>
                </div>
              </div>
              <?php
            }
          ?>   
          </ul>
    </div>

I need that top parent div of row-fluid surrounding the list item after every third print from the DB..

解决方案

On second readthrough, it seems more like you want every three LIs in a seperate DIV and UL. In that case, you can use array_chunk.

<?php $chunks = array_chunk($rows, 3);
for ($i = 0; $i<count($chunks); $i++)
{
    ?> <div class="row-fluid"><ul class="thumbnails"> <?php
    for ($j = 0; $j<count($chunks[$i]); $j++)
    {
        ?> do your LIs in here <?php
    }
    ?> </ul></div> <?php
}

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