求教，php写正则匹配html代码的数据

Question

我想要获得 【学生图书】 的名字，图书的href URL地址，图书的图片地址，销售量，售价，市场价，怎么写正则匹配呢，我写的正则老是出问题？匹配不到数据html代码
<div class="detail">
<div><a href="http://a.m.tmall.com/i19614323487.htm?sid=b7a1bfbd834f7a71">学生图书一xxxx</a></div>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td class="pic border" style="width:100px;height:100px;text-align:center;vertical-align:middle;">
<a href="http://a.m.tmall.com/i19614323487.htm?sid=b7a1bfbd834f7a71">
<img src="http://q.i01.wimg.taobao.com/bao/uploaded/i2/19264023005683587/T1Fs0MXqleXXXXXXXX_!!0-item_pic.jpg_100x100.jpg" alt="学生图书一" />
</a></td>
<td valign="middle">
<p>
售出：336笔<br/>
<span class="red">￥139.00</span><br />
<del class="gray" style="text-decoration:line-through;">￥239.00</del>                    </p>
</td>
</tr>
</table>
<!--    139.00  -->
</div>
</div>
<hr/>
   
<!--catid=50010850, catPath= -->
                    <div class="box">
<div class="detail">
<div><a href="http://a.m.tmall.com/i23681020274.htm?sid=b7a1bfbd834f7a71">学生图书二</a></div>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td class="pic border" style="width:100px;height:100px;text-align:center;vertical-align:middle;">
<a href="http://a.m.tmall.com/i23681020274.htm?sid=b7a1bfbd834f7a71">
<img src="http://q.i04.wimg.taobao.com/bao/uploaded/i2/19264021080891188/T1abNLXu8fXXXXXXXX_!!0-item_pic.jpg_100x100.jpg" alt="学生图书二" />
</a></td>
<td valign="middle">
<p>
售出：266笔<br/>
<span class="red">￥189.03</span><br />
<del class="gray" style="text-decoration:line-through;">￥339.00</del>                    </p>
</td>
</tr>
</table>
<!--    189.03  -->
</div>
</div>
<hr/>
   
<!--catid=50010850, catPath= -->
                    <div class="box">
<div class="detail">
<div><a href="http://a.m.tmall.com/i17747874821.htm?sid=b7a1bfbd834f7a71">学生图书三</a></div>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td class="pic border" style="width:100px;height:100px;text-align:center;vertical-align:middle;">
<a href="http://a.m.tmall.com/i17747874821.htm?sid=b7a1bfbd834f7a71">
<img src="http://q.i03.wimg.taobao.com/bao/uploaded/i1/19264021076909972/T1zZBNXr8bXXXXXXXX_!!0-item_pic.jpg_100x100.jpg" alt="三" />
</a></td>
<td valign="middle">
<p>
售出：120笔<br/>
<span class="red">￥239.04</span><br />
<del class="gray" style="text-decoration:line-through;">￥398.00</del>                    </p>
</td>
</tr>
</table>
<!--    239.04  -->
</div>
</div>
<hr/>
   

Answer 1

preg_match_all('#<div class="box"><div class="detail"><div><a href="([\d\D]*?)">([\d\D]*?)</a></div>#iU',$str,$r);var_dump($r);

Answer 2

preg_match_all('#<div class="box">\s*<div class="detail">\s*<div><a href="(.+)">(.+)</a></div>#iU',$str,$r);
print_r($r);
Array
(
    [0] => Array
        (
            [0] => <div class="box">
<div class="detail">
<div><a href="http://a.m.tmall.com/i23681020274.htm?sid=b7a1bfbd834f7a71">学生图书二</a></div>
            [1] => <div class="box">
<div class="detail">
<div><a href="http://a.m.tmall.com/i17747874821.htm?sid=b7a1bfbd834f7a71">学生图书三</a></div>
        )    [1] => Array
        (
            [0] => http://a.m.tmall.com/i23681020274.htm?sid=b7a1bfbd834f7a71
            [1] => http://a.m.tmall.com/i17747874821.htm?sid=b7a1bfbd834f7a71
        )    [2] => Array
        (
            [0] => 学生图书二
            [1] => 学生图书三
        ))