遍历DOMDocument [英] Loop over DOMDocument

问题描述

我正在遵循此问题的建议健壮，成熟的HTML解析器for PHP ，有关解析可能与 DOMDocument .

I am following the suggestion from this question Robust, Mature HTML Parser for PHP, about parsing html that may be malformed with DOMDocument.

有没有简单的方法可以循环遍历已解析的文档?所以我想像这样循环遍历html.

Is there any easy way to loop over the parsed document? So I would like to loop over html like this.

$html='<ul>
         <li>value1</li>
         <li>value1</li>
         <li>value3
            <p>subvalue</p>
         </li>
        </ul>
        <p>hello world</p>';

$doc = new DOMDocument();
$doc->loadHTML($html);
???
foreach (??? as $node)
{
  print $node->nodeName.':'.$node->nodeValue;
}

并获得类似这样的结果.

And get results somewhat like this.

 ul:
 li:value1
 li:value2
 li:value3
 p:subvalue
 p:hello world

单独使用$doc->childNodes并不能真正实现我想要的功能.由于它似乎不会下降到树的较低分支.我使用了 halfdan 建议的代码，

Using $doc->childNodes by itself doesn't really do what I want. Since it doesn't seem to go down to lower branches in the tree. I used the code suggested by halfdan and I get results like this.

html:
html:value1
         value1
         value3
            subvalue

        hello world

推荐答案

尝试一下:

$doc = new DOMDocument();
$doc->loadHTML($html);
showDOMNode($doc);

function showDOMNode(DOMNode $domNode) {
    foreach ($domNode->childNodes as $node)
    {
        print $node->nodeName.':'.$node->nodeValue;
        if($node->hasChildNodes()) {
            showDOMNode($node);
        }
    }    
}

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