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XMLWriter::startDocument

xmlwriter_start_document

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

XMLWriter::startDocument -- xmlwriter_start_documentCreate document tag

Description

Object-oriented style

public XMLWriter::startDocument(?string $version = "1.0", ?string $encoding = null, ?string $standalone = null): bool

Procedural style

xmlwriter_start_document(
    XMLWriter $writer,
    ?string $version = "1.0",
    ?string $encoding = null,
    ?string $standalone = null
): bool

Starts a document.

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().

version

The version number of the document as part of the XML declaration.

encoding

The encoding of the document as part of the XML declaration.

standalone

yes or no.

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

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User Contributed Notes 1 note

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Sbastien
6 months ago
XMLWriter::startDocument() writes the XML declaration.

Without XMLWriter::startDocument() :

<?php

$xml
= new XMLWriter();
$xml->openUri('php://stdout');
$xml->writeElement('message', 'Hello World!');
exit;

/*
Outputs :
<message>Hello World!</message>
*/
?>

With XMLWriter::startDocument() :

<?php

$xml
= new XMLWriter();
$xml->openUri('php://stdout');
$xml->startDocument();
$xml->writeElement('message', 'Hello World!');
exit;

/*
Outputs :
<?xml version="1.0"?>
<message>Hello World!</message>
*/
?>
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