public DOMAttr::__construct ( string $name [, string $value ] )
Creates a new DOMAttr object. This object is read only. It may be appended to a document, but additional nodes may not be appended to this node until the node is associated with a document. To create a writable node, use DOMDocument::createAttribute.
name
The tag name of the attribute.
value
The value of the attribute.
Example #1 Creating a new DOMAttr object
<?php
$dom = new DOMDocument('1.0', 'iso-8859-1');
$element = $dom->appendChild(new DOMElement('root'));
$attr = $element->setAttributeNode(new DOMAttr('attr', 'attrvalue'));
echo $dom->saveXML();
?> The above example will output:
<?xml version="1.0" encoding="utf-8"?> <root attr="attrvalue" />
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https://www.php.net/manual/en/domattr.construct.php