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<XMLWriter::writeCommentXMLWriter::writeDtdAttlist>
^XMLWriterLast updated: Mon, 26 Oct 2026

XMLWriter::writeDtd

xmlwriter_write_dtd

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

XMLWriter::writeDtd -- xmlwriter_write_dtd — Write full DTD tag

Description

Object-oriented style

public function XMLWriter::writeDtd(
    string $name,
    ?string $publicId = null,
    ?string $systemId = null,
    ?string $content = null
): bool

Procedural style

function xmlwriter_write_dtd(
    XMLWriter $writer,
    string $name,
    ?string $publicId = null,
    ?string $systemId = null,
    ?string $content = null
): bool

Writes a full DTD.

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 DTD name.

publicId

The external subset public identifier.

systemId

The external subset system identifier.

content

The content of the DTD.

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.

See Also


<XMLWriter::writeCommentXMLWriter::writeDtdAttlist>
^XMLWriterLast updated: Mon, 26 Oct 2026