(PHP 4 >= 4.1.0)
DomElement->set_attribute — Sets the value of an attribute
Sets an attribute with name name to the given value.
The name of the attribute. If this attribute doesn't exist, it will be created.
The value of the attribute.
Returns the old DomAttribute node, or the new one if you are creating the attribute for the first time.
Пример #1 Setting an attribute
<?php
$doc = domxml_new_doc("1.0");
$node = $doc->create_element("para");
$newnode = $doc->append_child($node);
$newnode->set_attribute("align", "left");
?>