PHP | XMLWriter endDtdEntity() Function

The XMLWriter::endDtdEntity() function is an inbuilt function in PHP which is used to end current DTD entity. DTD stands for Document Type Definition which defines the structure and the legal elements and attributes of an XML document. DTD isn’t visible on a webpage because they act like comments. Entities are used to define shortcuts to special characters.

Syntax:

bool XMLWriter::endDtdEntity( 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::endDtdEntity() function in PHP:



Example 1:

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<?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 Entity
$writer->startDtdEntity('entity', true);
   
// End the Dtd Entity
$writer->endDtdEntity();
      
// End the document
$writer->endDocument();
?>

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Output:

<?xml version="1.0" encoding="UTF-8"?>
<!ENTITY % entity>

Example 2:

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<?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 Entity which is
// not going to be visible
$writer->startDtdEntity('entity', true);
    
// End the Dtd Entity
$writer->endDtdEntity();
   
// Start a h1 element
$writer->startElement('h1');
   
// Add a style attribute
$writer->writeAttribute('style'
          'color:blue;font-size:100;');
   
// Add text to the element
$writer->text('GeeksforGeeks');
   
// End the element
$writer->endElement();
       
// End the document
$writer->endDocument();
?>

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Output:

Reference: https://www.php.net/manual/en/function.xmlwriter-end-dtd-entity.php




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