这种正则表达式怎么写？求高手解答！

有一个网页中的代码如下：

<span class="1">      <h3 class="title">testtesttesttesttesttestt</h3>      <div class="con">            <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p>
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                      </div></span><div class="2">      <h3 class="title">testtesttesttesttesttestt</h3>      <div class="con">            <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p>      </div></div><div class="3">      <h3 class="title">testtesttesttesttesttestt</h3>      <div class="con">            <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p>      </div></div><span class="4">      <h3 class="title">testtesttesttesttesttestt</h3>      <div class="con">            <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p>      </div></span>...

回复讨论(解决方案)

html或xml的东西有专门的dom api,特别是标签嵌套的html,尽量不要尝试用正则去获取,尤其是php的正则,这里涉及到正则的递归,即使php能有象其它语言提供的正则平衡组,也最好不要用。

\s+

(.*?)\s+

\s*(.*?)\s*\s*

谢谢两位的回答！

$s =<<< TXT<span class="1">      <h3 class="title">testtesttesttesttesttestt</h3>      <div class="con">            <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p>      </div></span><div class="2">      <h3 class="title">testtesttesttesttesttestt</h3>      <div class="con">            <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p>      </div></div><div class="3">      <h3 class="title">testtesttesttesttesttestt</h3>      <div class="con">            <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p>      </div></div><span class="4">      <h3 class="title">testtesttesttesttesttestt</h3>      <div class="con">            <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p>      </div></span>TXT;

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方案1

include 'phpquery.php';$doc = phpQuery::newDocument($s);echo $doc->find('.1')->html();echo pq('.2')->html();

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得

      <h3 class="title">testtesttesttesttesttestt</h3>      <div class="con">            <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p>      </div>      <h3 class="title">testtesttesttesttesttestt</h3>      <div class="con">            <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p>      </div>

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方案2

include 'html_document.php';$p = new html_document( $s, 0);foreach($p->find('.\d') as $v) {    echo "$v->innerHTML\n";}

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得

      <h3 class="title">testtesttesttesttesttestt</h3>      <div class="con">            <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p>      </div>      <h3 class="title">testtesttesttesttesttestt</h3>      <div class="con">            <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p>      </div>      <h3 class="title">testtesttesttesttesttestt</h3>      <div class="con">            <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p>      </div>      <h3 class="title">testtesttesttesttesttestt</h3>      <div class="con">            <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p>      </div>

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感谢版主大大 ，手快早给结贴了