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PHP | XMLWriter startDocument() Function

  • Last Updated : 18 Mar, 2020

The XMLWriter::startDocument() function is an inbuilt function in PHP which is used to start the document. This document then needs to be ended with XMLWriter::endDocument function.

Syntax:

bool XMLWriter::startDocument( string $version, 
string $encoding, string $standalone )

Parameters: This function accepts three parameters as mentioned above and described below:

  • $version (Optional): It specifies the version number of the document as part of the XML declaration.
  • $encoding (Optional): It specifies the encoding of the document as part of the XML declaration.
  • $standalone (Optional): It specifies whether document is standalone or not.

Return Value: This function returns TRUE on success or FALSE on failure.

Below examples illustrate the XMLWriter::startDocument() function in PHP:



Example 1:




<?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 a element
$writer->startElement('div');
  
// Add value to the element
$writer->text('GeeksforGeeks');
  
// End the element
$writer->endElement();
  
// End the document
$writer->endDocument();
?>

Output:

<?xml version="1.0" encoding="UTF-8"?>
<div>GeeksforGeeks</div>

Example 2:




<?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 a h1 element
$writer->startElement('h1');
    
// Start the style attribute
$writer->startAttribute('style');
    
// Add value to the attribute
$writer->text('color:orange;font-size:80px;');
    
// End the attribute
$writer->endAttribute();
    
// Add value to the element
$writer->text('GeeksforGeeks');
    
// End the element
$writer->endElement();
    
// End the document
$writer->endDocument();
?>

Output:

Reference: https://www.php.net/manual/en/function.xmlwriter-start-document.php




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