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<XMLWriter::startDocumentXMLWriter::startDtdAttlist>
^XMLWriterLast updated: Mon, 26 Oct 2026

XMLWriter::startDtd

xmlwriter_start_dtd

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

XMLWriter::startDtd -- xmlwriter_start_dtd — Create start DTD tag

Description

Object-oriented style

public function XMLWriter::startDtd(string $qualifiedName, ?string $publicId = null, ?string $systemId = null): bool

Procedural style

function xmlwriter_start_dtd(
    XMLWriter $writer,
    string $qualifiedName,
    ?string $publicId = null,
    ?string $systemId = null
): bool

Starts a 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().

qualifiedName

The qualified name of the document type to create.

publicId

The external subset public identifier.

systemId

The external subset system identifier.

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::startDocumentXMLWriter::startDtdAttlist>
^XMLWriterLast updated: Mon, 26 Oct 2026