PHP DOMDocument，使用p包装所有没有节点的元素 [英] PHP DOMDocument, wrap all elements without node with p
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问题描述
我从RTE获取HTML。之后，我使用DOMDocument类来处理其内容。
I get HTML from an RTE. I manipulate it's content afterwards with the DOMDocument Class.
编辑器有时会给我文本而没有节点，例如：
The Editor sometimes gives me text without an node, eg.:
<p>This is some text inside a text-node</p>
This is text without any node and should be wrapped with a text-node
包裹
我正在函数内使用以下代码：
I'm using the following code inside a function:
$dom = new \DOMDocument();
$dom->loadHTML($MY_HTML);
$xpath = new \DOMXPath($dom);
foreach ($xpath->query('//p') as $k => $paragraph) {
$paragraph->setAttribute('class', $paragraph->getAttribute('class') . ' bodytext');
}
$body = $xpath->query('/html/body');
return preg_replace('/^<body>|<\/body>$/', '', $dom->saveXml($body->item(0)));
推荐答案
从技术上讲，文本已经在文本节点 ，但这会将所有未包装的文本节点与段落节点包装在一起：
The text is technically already inside a "text node", but this will wrap all unwrapped text nodes with paragraph nodes:
<?php
$html = <<<'END'
<div>
<p>This is some text inside a text-node</p>
This is text without any node and should be wrapped with a text-node
</div>
END;
$doc = new \DOMDocument();
$doc->loadHTML($html, LIBXML_HTML_NOIMPLIED);
$xpath = new \DOMXPath($doc);
$nodes = $xpath->query('//text()[not(ancestor::p)][normalize-space()]');
foreach ($nodes as $node) {
$p = $doc->createElement('p', htmlspecialchars(trim($node->textContent)));
$node->parentNode->replaceChild($p, $node);
}
print $doc->saveHTML($doc->documentElement);
// <div>
// <p>This is some text inside a text-node</p>
// <p>This is text without any node and should be wrapped with a text-node</p>
// </div>
关键是选择所有没有 p <的非空文本节点/ code>祖先，使用 // text（）[not（ancestor :: p）] [normalize-space（）] XPath查询。
The key is to select all the non-empty text nodes without p ancestors, using the //text()[not(ancestor::p)][normalize-space()] XPath query.
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