Web scraping web抓取-获取元素中特定节点的值

我的html如下所示：

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 <p><strong>Jamshedpur:</strong> Three members of a family were beaten to death, allegedly by some villagers on charge of stealing a cattle in Udajo village of West Singhbhum district, police said on Saturday.</p><p>The incident took place on Thursday but the bodies, which were dumped in a jungle boring Naxal-hit Tonto area of the distirct, was yet to be recovered.</p><figure class="article_img">

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            <a href="/newstopics/cattle.html">#cattle</a> <a href="/newstopics/lynch.html">#lynch</a> <a href="/newstopics/theft.html">#theft</a> 
        </div><div style="height: auto; width: 100%; text-align: center; padding: 0px; margin: auto; position: relative; overflow: hidden; background: transparent none repeat scroll 0% 0%;" class="_adSenceImagePushContainer"><iframe width="728" height="90" frameborder="0" scrolling="no" allowtransparency="true" class="_adSenceImagePush" loadstatus="1" data-width="728" data-height="90" style="height:90px !important; min-height:90px !important; width:728px !important; overflow:hidden;bottom:0px;margin:0 auto 15px;position:relative; background: transparent; z-index: 2; -moz-transform: scale(1); -o-transform: scale(1); -webkit-transform: scale(1); transform: scale(1); max-width:initial !important;" hov-data-host="www.ibnlive.com" hov-data-section="news/*" hov-data-wom="web" hov-data-id="21" hov-data-default="true"></iframe></div><p>The victims were identified as Sukra Koda (30), his cousins Sanatan Laguri (32) and Surja Laguri (25). They were allegedly caught by the villagers and thrashed with lathis on charge of taking away a cattle, said the officer-in charge of the concerned police station, Sahdeo Toppo.</p><p>Toppo said the bodies have allegedly been dumped in the jungle but could not yet been recovered the area being a disturbed one.</p><p>A police team will be sent on Sunday to the spot to recover the bodies.</p><p>Meanwhile, an FIR has been registered against 13 villagers in this connection, he said adding that no one was arrested as yet. </p>             <!--tech poll -->




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但上面的代码返回我文章标记中的全部内容，而我只需要文章中的p标记

我尝试过使用像nodeName和childNodes这样的属性，但没有效果。 我已经参考了以下链接，以便于理解，因为我对网络抓取很幼稚，但无法找到解决方案和解决方案

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请给我一些示范性的解决办法。提前感谢。

我得到了解决方案，使用xpath可以满足上述要求

    $xpath = new DOMXPath($doc); 
$news_paras = $xpath->query("//article//p"); 
$parag = array(); 
foreach ($news_paras as $news_para) 
{ $parag[]=$news_para->nodeValue; }

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获得解决方案：$xpath=newdomxpath（$doc）；$news\u paras=$xpath->query（//article//p）；$parag=array（）；foreach（$news\u paras as$news\u para）{$parag[]=$news\u para->nodeValue；}

    $xpath = new DOMXPath($doc); 
$news_paras = $xpath->query("//article//p"); 
$parag = array(); 
foreach ($news_paras as $news_para) 
{ $parag[]=$news_para->nodeValue; }