XMLReader::expand

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

XMLReader::expand現在のノードのコピーを DOM オブジェクトとして返す

説明

public XMLReader::expand(?DOMNode $baseNode = null): DOMNode|false

このメソッドは、現在のノードをコピーして適切な DOM オブジェクトを返します。

パラメータ

baseNode

DOM オブジェクトを作る対象の DOMDocument を示す DOMNode

戻り値

DOMNode か、エラー時には false を返します。

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Sbastien
7 months ago
XMLReader::expand() expands the current subtree to DOM. SimpleXML is good too. To avoid a warning like "Imported Node must have associated Document" when using simplexml_import_dom(), we can do :

<?php

// Huge XML compressed file
$xml = XMLReader::open('compress.zlib:///path/to/my-data.xml.gz');

// Targeting a tiny subtree
while ($xml->name !== 'my-targeted-element') {
   
$xml->read();
}

// The trick is here...
// Subtree is expanded in an empty document...
$dom = $xml->expand(new DOMDocument());

// ... which can be imported by SimpleXML
$sx = simplexml_import_dom($dom);

// We can now process our tiny subtree with SimpleXML $sx
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