一个正则表达式的求教
//需要的是这部分的信息-------------------------------------<h1 class="firstHeading">PDF阅读器</h1> <div id="bodyContent"> <h3 id="siteSub">取自 AEED</h3> <div id="contentSub"></div> <div id="jump-to-nav">跳转到: <a href="#column-one">导航</a>, <a href="#searchInput">搜索</a></div> <!-- start content --> <div id="divPdf0" title="../2003Z/AdbeRdr812_zh_CN.zip" class="downpdf" style="cursor:hand;">PDF阅读器 Adobe Reader 8.1.2 简体中文版</div>//---------------------<!-- Saved in parser cache with key wikidb:pcache:idhash:9031-0!1!0!!zh-sg!2 and timestamp 20120327075108 --><div class="printfooter">取自"<a href="http://localhost/index.php/PDF%E9%98%85%E8%AF%BB%E5%99%A8">http://localhost/index.php/PDF%E9%98%85%E8%AF%BB%E5%99%A8</a>"</div> <!-- end content --> <div class="visualClear"></div> </div> </div> </div> <div id="column-one"> <div id="p-cactions" class="portlet"> <h5>查看</h5> <div class="pBody"> <ul> <li id="ca-nstab-main" class="selected"><a href="/index.php/PDF%E9%98%85%E8%AF%BB%E5%99%A8">条目</a></li> <li id="ca-talk" class="new"><a href="/index.php?title=Talk:PDF%E9%98%85%E8%AF%BB%E5%99%A8&action=edit">讨论</a></li> <li id="ca-edit"><a href="/index.php?title=PDF%E9%98%85%E8%AF%BB%E5%99%A8&action=edit">编辑</a></li> <li id="ca-history"><a href="/index.php?title=PDF%E9%98%85%E8%AF%BB%E5%99%A8&action=history">历史</a></li> </ul> </div> </div> <div class="portlet" id="p-personal"> <h5>个人工具</h5> <div class="pBody"> <ul> <li id="pt-login"><a href="/index.php?title=Special:Userlogin&returnto=PDF%E9%98%85%E8%AF%BB%E5%99%A8">登录/注册</a></li> </ul> </div> </div> <script type="text/javascript"> if (window.isMSIE55) fixalpha(); </script> <div class='portlet' id='p-.E7.9F.A5.E8.AF.86.E5.BA.93'> <div class='pBody'> </div> </div> <div id="p-search" class="portlet"> <h5><label for="searchInput">搜索</label></h5> <div id="searchBody" class="pBody"> <form action="/index.php/Special:Search" id="searchform"><div> <input id="searchInput" name="search" type="text" accesskey="f" value="" /> <input type='submit' name="go" class="searchButton" id="searchGoButton" value="进入" /> <input type='submit' name="fulltext" class="searchButton" id="mw-searchButton" value="搜索" /> </div></form> </div> </div> <div class="portlet" id="p-tb"> <h5>工具箱</h5> <div class="pBody"> </div> </div> </div><!-- end of the left (by default at least) column --> <div class="visualClear"></div> <div id="footer"> <div id="f-poweredbyico"><a href="http://www.mediawiki.org/"><img src="/skins/common/images/poweredby_mediawiki_88x31.png" alt="Powered by MediaWiki" /></a></div> <div id="f-copyrightico"><a href="http://www.gnu.org/copyleft/fdl.html"><img src="/skins/common/images/gnu-fdl.png" alt='GNU Free Documentation License 1.2' /></a></div> </div> <script type="text/javascript">if (window.runOnloadHook) runOnloadHook();</script></div><!-- Served by localhost in 0.230 secs. --></body></html>
$html = <<<html<h1 class="firstHeading">PDF阅读器</h1> <div id="bodyContent"> <h3 id="siteSub">取自 AEED</h3> <div id="contentSub"></div> <div id="jump-to-nav">跳转到: <a href="#column-one">导航</a>, <a href="#searchInput">搜索</a></div> <!-- start content --> <div id="divPdf0" title="../2003Z/AdbeRdr812_zh_CN.zip" class="downpdf" style="cursor:hand;">PDF阅读器 Adobe Reader 8.1.2 简体中文版</div><!-- Saved in parser cache with key wikidb:pcache:idhash:9031-0!1!0!!zh-sg!2 and timestamp 20120327075108 --><div class="printfooter">取自"<a href="http://localhost/index.php/PDF%E9%98%85%E8%AF%BB%E5%99%A8">http://localhost/index.php/PDF%E9%98%85%E8%AF%BB%E5%99%A8</a>"</div> <!-- end content --> <div class="visualClear"></div> </div> </div> </div> <div id="column-one"> <div id="p-cactions" class="portlet"> <h5>查看</h5> <div class="pBody"> <ul> <li id="ca-nstab-main" class="selected"><a href="/index.php/PDF%E9%98%85%E8%AF%BB%E5%99%A8">条目</a></li> <li id="ca-talk" class="new"><a href="/index.php?title=Talk:PDF%E9%98%85%E8%AF%BB%E5%99%A8&action=edit">讨论</a></li> <li id="ca-edit"><a href="/index.php?title=PDF%E9%98%85%E8%AF%BB%E5%99%A8&action=edit">编辑</a></li> <li id="ca-history"><a href="/index.php?title=PDF%E9%98%85%E8%AF%BB%E5%99%A8&action=history">历史</a></li> </ul> </div> </div> <div class="portlet" id="p-personal"> <h5>个人工具</h5> <div class="pBody"> <ul> <li id="pt-login"><a href="/index.php?title=Special:Userlogin&returnto=PDF%E9%98%85%E8%AF%BB%E5%99%A8">登录/注册</a></li> </ul> </div> </div> <script type="text/javascript"> if (window.isMSIE55) fixalpha(); </script> <div class='portlet' id='p-.E7.9F.A5.E8.AF.86.E5.BA.93'> <div class='pBody'> </div> </div> <div id="p-search" class="portlet"> <h5><label for="searchInput">搜索</label></h5> <div id="searchBody" class="pBody"> <form action="/index.php/Special:Search" id="searchform"><div> <input id="searchInput" name="search" type="text" accesskey="f" value="" /> <input type='submit' name="go" class="searchButton" id="searchGoButton" value="进入" /> <input type='submit' name="fulltext" class="searchButton" id="mw-searchButton" value="搜索" /> </div></form> </div> </div> <div class="portlet" id="p-tb"> <h5>工具箱</h5> <div class="pBody"> </div> </div> </div><!-- end of the left (by default at least) column --> <div class="visualClear"></div> <div id="footer"> <div id="f-poweredbyico"><a href="http://www.mediawiki.org/"><img src="/skins/common/images/poweredby_mediawiki_88x31.png" alt="Powered by MediaWiki" /></a></div> <div id="f-copyrightico"><a href="http://www.gnu.org/copyleft/fdl.html"><img src="/skins/common/images/gnu-fdl.png" alt='GNU Free Documentation License 1.2' /></a></div> </div> <script type="text/javascript">if (window.runOnloadHook) runOnloadHook();</script></div><!-- Served by localhost in 0.230 secs. --></body></html>html;preg_match('/(<h1 class="firstHeading">.*)<\!-- Saved in parser/isU', $html, $match);echo $match[1];
[解决办法]
preg_match('/<h1 class="firstHeading".+<div id="divPdf0".+?<\/div>/is',$str,$arr);echo $arr[0];