怎么写这个正则表达式

Question

下面是截取一个表格里的两行数据，我需要写个正则表达式 得到每行第二列的数据 比如<td>509</td> 中的509，怎么写这个正则表达式？
<tr class="odd"><td class="col-name">
        <a class="listing-icon" href="http://www.wowdb.com/items/86983-unsoks-amber-scalpel">
            <div style="position: relative">
                <img src="http://media-azeroth.cursecdn.com/avatars/thumbnails/310/801/36/36/inv-knife-1h-pandaraid-d-02.png" alt="" />                
            </div>
        </a>
       <a href="http://www.wowdb.com/items/86983-unsoks-amber-scalpel" class="q4 t">Un&#x27;sok&#x27;s Amber Scalpel</a>
        </td><td>509</td><td>90</td><td>1,870.3</td><td>1.80</td><td>Main Hand</td><td>
</td><td>Dagger</td>
</tr>
<tr class="even"><td class="col-name">
        <a class="listing-icon" href="http://www.wowdb.com/items/86987-scimitar-of-seven-stars">
            <div style="position: relative">
                <img src="http://media-azeroth.cursecdn.com/avatars/thumbnails/306/658/36/36/inv-sword-1h-pandaraid-d-01.png" alt="" />                
            </div>
        </a>
<a href="http://www.wowdb.com/items/86987-scimitar-of-seven-stars" class="q4 t">Scimitar of Seven Stars</a>
        </td><td>509</td><td>90</td><td>3,740.6</td><td>2.60</td><td>One Hand</td><td>
</td><td>One-handed Sword</td>
</tr>

Answer 1

$s=<<<txt
<tr class="odd"><td class="col-name">
  <a class="listing-icon" href="http://www.wowdb.com/items/86983-unsoks-amber-scalpel">
  <div style="position: relative">
  <img src="http://media-azeroth.cursecdn.com/avatars/thumbnails/310/801/36/36/inv-knife-1h-pandaraid-d-02.png" alt="" />  
  </div>
  </a>
  <a href="http://www.wowdb.com/items/86983-unsoks-amber-scalpel" class="q4 t">Un&#x27;sok&#x27;s Amber Scalpel</a>
  </td><td>509</td><td>90</td><td>1,870.3</td><td>1.80</td><td>Main Hand</td><td>
</td><td>Dagger</td>
</tr>
<tr class="even"><td class="col-name">
  <a class="listing-icon" href="http://www.wowdb.com/items/86987-scimitar-of-seven-stars">
  <div style="position: relative">
  <img src="http://media-azeroth.cursecdn.com/avatars/thumbnails/306/658/36/36/inv-sword-1h-pandaraid-d-01.png" alt="" />  
  </div>
  </a>
<a href="http://www.wowdb.com/items/86987-scimitar-of-seven-stars" class="q4 t">Scimitar of Seven Stars</a>
  </td><td>509</td><td>90</td><td>3,740.6</td><td>2.60</td><td>One Hand</td><td>
</td><td>One-handed Sword</td>
</tr>
txt;
preg_match_all('#<tr[^>]*><td[^>]*>.+</td><td>(.*)</td>#isU',$s,$m);
print_r($m[1]);
Array
(
    [0] => 509
    [1] => 509
)

Answer 2

谢谢啊 
我现在还想得到最后一列的数据 这样写怎么不对 "#<tr[^>]*>(.*)<td>(.*)</td></tr>#isU "

Answer 3

#<tr[^>]*>(.*)<td>([^<]*)</td>\s*</tr>#isU  // 这样试试