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PHP | DOMCharacterData insertData() Function
  • Last Updated : 20 Feb, 2020

The DOMCharacterData::insertData() function is an inbuilt function in PHP which is used to insert a string at the specified 16-bit unit offset.

Syntax:

void DOMCharacterData::insertData( int $offset, string $data )

Parameters: This function accept two parameters as mentioned above and described below:

  • $offset: It specifies the starting point to insert data.
  • $data: It specifies the data to insert.

Return Value: This function does not return any value.

Below given programs illustrate the DOMCharacterData::insertData() function in PHP:



Program 1:

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<?php
  
// Create a new DOM Document
$dom = new DOMDocument('1.0', 'iso-8859-1');
  
// Create a div element
$element = $dom->appendChild(new DOMElement('div'));
  
// Create a DOMCdataSection 
$text = $element->appendChild(
        new DOMCdataSection('GeeksGeeks'));
  
// Insert 'For' between Geeks and Geeks
$text->insertData(5, 'For');
  
echo $dom->saveXML();
?>

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Output:

<?xml version="1.0" encoding="iso-8859-1"?>
<div><![CDATA[GeeksForGeeks]]></div>

Use Chrome Developer tools to view the HTML or press Ctrl+U

Program 2:

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<?php
  
// Create a new DOM Document
$dom = new DOMDocument('1.0', 'iso-8859-1');
  
// Create a div element
$element = $dom->appendChild(new DOMElement('div'));
  
// Create a DOMCdataSection 
$text = $element->appendChild(
        new DOMCdataSection('My DOM Characters'));
  
// Insert in the beginning
$text->insertData(0, 'Beginning');
  
echo $dom->saveXML();
?>

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Output:

<?xml version="1.0" encoding="iso-8859-1"?>
<div><![CDATA[BeginningMy DOM Characters]]></div>

Program 3:

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<?php
  
// Create a new DOM Document
$dom = new DOMDocument('1.0', 'iso-8859-1');
  
// Create a div element
$element = $dom->appendChild(new DOMElement('div'));
  
// Create a DOMCdataSection 
$text = $element->appendChild(
        new DOMCdataSection('My DOM Characters'));
  
// Insert in the end
$text->insertData(17, 'End');
  
echo $dom->saveXML();
?>

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Output:

<?xml version="1.0" encoding="iso-8859-1"?>
<div><![CDATA[My DOM CharactersEnd]]></div>

Reference: https://www.php.net/manual/en/domcharacterdata.insertdata.php

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