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PHP | XMLWriter startCdata() Function
  • Last Updated : 18 Mar, 2020

The XMLWriter::startCdata() function is an inbuilt function in PHP which is used to start the CDATA. This element then needs to be closed with XMLWriter::endCdata() function. CDATA is a block of text which is not parsed by the parser but are recognized as markup.

Syntax:

bool XMLWriter::startCdata( 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::startCdata() 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('h1');
  
// Start the Cdata
$writer->startCdata();
  
// Add value to the Cdata
$writer->text('value');
  
// End the Cdata
$writer->endCdata();
  
// End the element
$writer->endElement();
  
// End the document
$writer->endDocument();
?>

Output:

<?xml version="1.0" encoding="UTF-8"?>
<h1><![CDATA[value]]></h1>

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 element
$writer->startElement('p');
  
// Start the Cdata
$writer->startCdata();
  
// Add value to the Cdata which is not
// going to be visible on the webpage
$writer->text('This will be secret text, 
                 not visible in browser');
  
// End the Cdata
$writer->endCdata();
  
// Add value to the element
$writer->text('GeeksforGeeks, portal for 
                       Computer Science.');
  
// End the element
$writer->endElement();
  
// End the document
$writer->endDocument();
?>

Output:

<?xml version="1.0" encoding="UTF-8"?>
<p><![CDATA[This will be secret text, not visible in browser]]>
    GeeksforGeeks, portal for Computer Science.
</p>

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




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