我正在尝试使用DOMDocument,但遇到了一些问题。我有一个这样的字符串:
Some Content to keep
<span class="ice-cts-1 ice-del" data-changedata="" data-cid="5" data-time="1414514760583" data-userid="1" data-username="Site Administrator" undefined="Site Administrator">
This content should remain, but span around it should be stripped
</span>
Keep this content too
<span>
<span class="ice-cts-1 ice-ins" data-changedata="" data-cid="2" data-time="1414512278297" data-userid="1" data-username="Site Administrator" undefined="Site Administrator">
This whole node should be deleted
</span>
</span>
我想做的是,如果span有一个类似ice-del
的类,则保留内部内容,但删除span标记。如果它有ice-ins
,则删除整个节点。
如果它只是一个空跨度<span></span>
,也将其移除。这是我的代码:
//this get the above mentioned string
$getVal = $array['body'][0][$a];
$dom = new DOMDocument;
$dom->loadHTML($getVal );
$xPath = new DOMXPath($dom);
$delNodes = $xPath->query('//span[@class="ice-cts-1 ice-del"]');
$insNodes = $xPath->query('//span[@class="ice-cts-1 ice-ins"]');
foreach($insNodes as $span){
//reject these changes, so remove whole node
$span->parentNode->removeChild($span);
}
foreach($delNodes as $span){
//accept these changes, so just strip out the tags but keep the content
}
$newString = $dom->saveHTML();
所以,我的代码可以删除整个span节点,但我如何删除一个节点并去掉它的标签,但保留它的内容?
此外,我该如何删除并清空跨度?我确信我可以使用regex或replace来完成这项工作,但我有点想使用dom。
感谢
不,我不建议使用regex,我强烈建议使用这个漂亮的HTML Parser在您现在拥有的基础上进行构建。在这种情况下,您可以使用->replaceChild
:
$dom = new DOMDocument;
$dom->loadHTML($getVal);
$xPath = new DOMXPath($dom);
$spans = $xPath->query('//span');
foreach ($spans as $span) {
$class = $xPath->evaluate('string(./@class)', $span);
if(strpos($class, 'ice-ins') !== false || $class == '') {
$span->parentNode->removeChild($span);
} elseif(strpos($class, 'ice-del') !== false) {
$span->parentNode->replaceChild(new DOMText($span->nodeValue), $span);
}
}
$newString = $dom->saveHTML();
从DOM树中删除任何HTML标记的更通用的解决方案使用此;
$dom = new DOMDocument;
$dom->loadHTML($getVal);
$xPath = new DOMXPath($dom);
$tagName = $xPath->query('//table'); //use what you want like div, span etc.
foreach ($tagName as $t) {
$t->parentNode->removeChild($span);
}
$newString = $dom->saveHTML();
示例html:
<html>
<head></head>
<body>
<table>
<tr><td>Hello world</td></tr>
</table>
</body>
</html>
加工后输出;
<html>
<head></head>
<body></body>
</html>