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 // 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 // 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('neveropen, 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]]> neveropen, portal for Computer Science. </p>
Reference: https://www.php.net/manual/en/function.xmlwriter-start-cdata.php