Remove empty XML elements with phpQuery [duplicate]

StackOverflow https://stackoverflow.com/questions/16032553

  •  04-04-2022
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Question

As mentioned in title, I'd like remove all empty elements from XML document.

By empty I mean elements that don't have any text nodes in it or in its children.

Is it possible to do that with phpQuery?

Was it helpful?

Solution

I used Gordon's code from answer in this topic: Reg expression to remove empty Tags (any of them)?

Firstly I tried just to put his XPath query into phpQueryObject::find() method, but it gave me a warning saying it's incorrect query. Don't know why since it's using DOMXPath and should work.

Anyway the solution was still quite simple. 

$pqDoc = phpquery::newDocument() // phpQueryObject created some way. Doesn't matter here.
$xp = new DOMXPath($pqDoc->getDOMDocument());
foreach($xp->query('//*[not(node()) or normalize-space() = ""]') as $node) {
    $node->parentNode->removeChild($node);
}

Now you have removed empty elements and you still can use your changed phpQueryObject since it has actually working on DOMDocument's reference.

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