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<XMLWriter::toUriXMLWriter::writeAttributeNs>
^XMLWriterLast updated: Mon, 26 Oct 2026

XMLWriter::writeAttribute

xmlwriter_write_attribute

(PHP 5 >= 5.1.2, PHP 7, PHP 8, PECL xmlwriter >= 0.1.0)

XMLWriter::writeAttribute -- xmlwriter_write_attribute — Write full attribute

Description

Object-oriented style

public function XMLWriter::writeAttribute(string $name, string $value): bool

Procedural style

function xmlwriter_write_attribute(XMLWriter $writer, string $name, string $value): bool

Writes a full attribute.

Parameters

writer

Only for procedural calls. The XMLWriter instance that is being modified. This object is returned from a call to xmlwriter_open_uri() or xmlwriter_open_memory().

name

The name of the attribute.

value

The value of the attribute.

Return Values

Returns true on success or false on failure.

Changelog

Version Description
8.0.0 writer expects an XMLWriter instance now; previously, a resource was expected.

Examples

Example #1 Intermixing Sub-elements and Attributes

If writing sub-elements and attributes is intermixed, any attempt to write attributes after the first sub-element will fail and return false.

<?php
$xml = new XMLWriter();
$xml->openMemory();

$xml->startElement('element');
$xml->writeAttribute('attr1', '0');
$xml->writeElement('subelem', '0');
var_dump($xml->writeAttribute('attr2', '0'));
$xml->endElement();

echo $xml->flush();
?>

The above example will output:

bool(false)
<element attr1="0"><subelem>0</subelem></element>

See Also


<XMLWriter::toUriXMLWriter::writeAttributeNs>
^XMLWriterLast updated: Mon, 26 Oct 2026