PHP | XMLWriter endDtd() Function

The XMLWriter::endDtd() function is an inbuilt function in PHP which is used to end current DTD which is started using XMLWriter::startDtd() function. DTD stands for Document Type Definition which defines the structure and the legal elements and attributes of an XML document. DTD aren’t visible in a webpage because they act like comments. Syntax:

bool XMLWriter::endDtd( void )

Parameters: This function doesn’t accept any parameter. Return Value: This function returns TRUE on success or FALSE on failure. Below examples illustrate the XMLWriter::endDtd() function in PHP: Example 1: php

<?php

// Create a new XMLWriter instance
$writer = new XMLWriter();
    
// Create the output stream as PHP
$writer->openURI('php://output');
    
// Start the document
$writer->startDocument('1.0', 'UTF-8');
 
// Start the Dtd
$writer->startDtd('my_dtd');
 
// End the Dtd 
$writer->endDtd();
    
// End the document
$writer->endDocument();
?>

Output: Press Ctrl+U to see the XML Example 2: php

<?php
// Create a new XMLWriter instance
$writer = new XMLWriter();
    
// Create the output stream as PHP
$writer->openURI('php://output');
    
// Start the document
$writer->startDocument('1.0', 'UTF-8');
 
// Start the Dtd
$writer->startDtd('my_dtd_which_is_not_visible');
 
// End the Dtd 
$writer->endDtd();

// Write a text to document
$writer->text('This is XMLWriter.');

// End the document
$writer->endDocument();
?>

Output:

This is XMLWriter.