在PHP中没有外部标记的某个标记中提取Html内容
问题描述:
I'd like to retrieve html code in a certain tag. I know DomDocument enables to do it. However, If I want to extract the contents without the outer tag, how can it be achieved?
For example,
$html = '<div><span>Hello world!</span><br><p>some other text</p></div>';
$doc = new DOMDocument;
$doc->loadHTML($html);
echo $doc->saveXML($doc->getElementsByTagName('div')->item(0));
this will output,
<div>
<span>Hello world!</span>
<br>
<p>some other text</p>
</div>
I want it without the outer div tag. I tried the node value but it strips all the tags.
$html = '<div><span>Hello world!</span><br><p>some other text</p></div>';
$doc = new DOMDocument;
$doc->loadHTML($html);
$node = $doc->getElementsByTagName('div')->item(0);
echo $node->nodeValue;
Any ideas?
我想检索某个标签中的html代码。 我知道DomDocument可以做到这一点。 但是,如果我想在没有外部标记的情况下提取内容,如何实现呢? p>
例如, p>
$ html ='&lt; div&gt;&lt; span&gt; Hello world!&lt; / span&gt;&lt; br&gt;&lt; p&gt;其他一些文字&lt; / p&gt;&lt; / div&gt;';
$ doc = new DOMDocument;
$ doc-&gt; loadHTML($ html);
echo $ doc-&gt; saveXML($ doc-&gt; getElementsByTagName('div') - &gt; item(0));
code> pre>
这将输出, p>
&lt; div&gt;
&lt; span&gt; Hello world!&lt; / span&gt;
&lt; br&gt;
&lt; p&gt;其他一些文字&lt; / p&gt;
&lt; / div&gt;
code> pre>
我希望它没有 外部div标签。 我尝试了节点值,但它删除了所有标签。 p>
$ html ='&lt; div&gt;&lt; span&gt; Hello world!&lt; / span&gt;&lt; br&gt; &lt; p&gt;其他一些文字&lt; / p&gt;&lt; / div&gt;';
$ doc = new DOMDocument;
$ doc-&gt; loadHTML($ html);
$ node = $ doc-&gt; getElementsByTagName('div') - &gt; item(0);
echo $ node- &gt; nodeValue;
code> pre>
任何想法? p>
div>
答
All right, how about a PHP innerHTML implementation:
<?php
$html = '<div><span>Hello world!</span><br><p>some other text</p></div>';
$doc = new DOMDocument;
$doc->loadHTML($html);
$node = $doc->getElementsByTagName('div')->item(0);
echo DOMinnerHTML($node);
function DOMinnerHTML($element)
{
$innerHTML = "";
$children = $element->childNodes;
foreach ($children as $child)
{
$tmp_dom = new DOMDocument();
$tmp_dom->appendChild($tmp_dom->importNode($child, true));
$innerHTML.=trim($tmp_dom->saveHTML());
}
return $innerHTML;
}
?>