(PHP 5, PHP 7, PHP 8)
DOMElement::setAttribute — Adds new or modifies existing attribute
Sets an attribute with name qualifiedName to the given
value. If the attribute does not exist, it will be created.
qualifiedNameThe name of the attribute.
valueThe value of the attribute.
Example #1 Setting an attribute
<?php
$doc = new DOMDocument("1.0");
$node = $doc->createElement("para");
$newnode = $doc->appendChild($node);
$newnode->setAttribute("align", "left");
?>