有一个网页中的代码如下:
<span class="1"> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div></span><div class="2"> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div></div><div class="3"> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div></div><span class="4"> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div></span>...
大家注意到没有 class="1",class="2",class="3",...是有规律的,但是前面的标签没有规律,有时是span,有时是div,我想要的是用php如何写正则表达式获取class="1",class="2",class="3",...的内容,正则表达式这方面学的不好,试了半天都写不出来,求高手解答!
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!
$s =<<< TXT<span class="1"> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div></span><div class="2"> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div></div><div class="3"> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div></div><span class="4"> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div></span>TXT;
方案1 include 'phpquery.php';$doc = phpQuery::newDocument($s);echo $doc->find('.1')->html();echo pq('.2')->html();
得 <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div>
方案2 include 'html_document.php';$p = new html_document( $s, 0);foreach($p->find('.\d') as $v) { echo "$v->innerHTML\n";}
得 <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div>
感谢版主大大 ,手快早给结贴了
谢谢两位的回答!
$s =<<< TXT<span class="1"> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div></span><div class="2"> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div></div><div class="3"> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div></div><span class="4"> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div></span>TXT;
方案1
include 'phpquery.php';$doc = phpQuery::newDocument($s);echo $doc->find('.1')->html();echo pq('.2')->html();得
<h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div>方案2
include 'html_document.php';$p = new html_document( $s, 0);foreach($p->find('.\d') as $v) { echo "$v->innerHTML\n";}得
<h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div> <h3 id="testtesttesttesttesttestt">testtesttesttesttesttestt</h3> <div class="con"> <span>testtesttest</span><p>testtesttesttesttesttesttesttesttest</p> </div>
感谢版主大大 ,手快早给结贴了

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