如何保持< p>< img .../></p>用XPATH? [英] How to keep <p><img ... /></p> with XPATH?

问题描述

我使用XPATH删除不整洁的HTML标记，

I use XPATH to remove untidy HTML tags,

$nodeList = $xpath->query("//*[normalize-space(.)='' and not(self::br)]");
    foreach($nodeList as $node) 
    {
        $node->parentNode->removeChild($node);
    }

将删除此类可怕的输入，

will remove the horrible input like these,

<p><em><br /></em></p>
<p><span style="text-decoration: underline;"><em><br /></em></span></p>

但它也删除了我想保持的img tag打击，

but it also removes the img tag like blow that I want to keep,

<p><img title="picture summit" src="images/32913430_127001_e.jpg" alt="picture summit" width="590" height="366" /></p>

如何使用XPATH保留img tag输入?

How can I keep the img tag input with XPATH?

推荐答案

使用:

//p[not(descendant::*[self::img or self::br]) and normalize-space()='']

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