[英]PHP: How to check if a <p> has a child node of <iframe> with DOMDocument?
[英]PHP DOMDocument, wrap all elements without node with p
我從RTE獲得HTML。 之后,我將使用DOMDocument類來處理其內容。
編輯器有時會給我文本而沒有節點,例如:
<p>This is some text inside a text-node</p>
This is text without any node and should be wrapped with a text-node
是否可以使用DOMDocument使用文本節點包裝此文本?
我在函數中使用以下代碼:
$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)));
從技術上講,文本已經在“ text node”內 ,但這會將所有未包裝的文本節點與段落節點包裝在一起:
<?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>
關鍵是使用//text()[not(ancestor::p)][normalize-space()]
XPath查詢來選擇所有沒有p
祖先的非空文本節點。
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