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PHP XML

PHP XML

PHP XML Contents

PHP DOMNode Function lookupPrefix
PHP DOMNode Function lookupNamespaceURI
PHP DOMNode Function isSupported
PHP DOMNode Function isSameNode
PHP DOMNode Function insertBefore
PHP DOMNode Function hasChildNodes
PHP DOMNode Function hasAttributes
PHP DOMNode Function cloneNode
PHP DOMNodelist Function item
PHP DOMNamedNodeMap Function item
PHP DOMNamedNodeMap Function getNamedItemNS
PHP DOMNamedNodeMap Function getNamedItem
PHP DOMImplementation Function hasFeature
PHP DOMImplementation Function createDocumentType
PHP DOMImplementation Function createDocument
PHP DOMElement Function removeAttributeNS
PHP DOMElement Function removeAttributeNode
PHP DOMElement Function removeAttribute
PHP DOMElement Function hasAttributeNS
PHP DOMElement Function getAttribute
 
 
By :Mark Wilson
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First posted :03/24/2008
Times viewed :365
 

DOMNode Function replaceChild

PHP Version: (No version information might be only in CVS. I have used this function in PHP5)

Description

This function replaces a child by another node.

Usage:

objectDOMNode->replaceChild ( object newnode, object oldnode)

This function replaces the child oldnode with the passed new node. If the new node is already a child it will not be added a second time. If the replacement succeeds the old node is returned.

Throws DOMException if node cannot be replaced.

PHP Code:

<?php

$xmlstr = <<<XML
<?xml version="1.0" encoding="UTF-8"?>
<employee>
<employeename id="myId">test1</employeename>
<employeeaddress>testAddress1</employeeaddress>
<SSN>11111</SSN>
<company>XYZ Corporation</company>
</employee>
XML;

$dom = new domDocument;

//load the XML string into the DOM

$dom->loadXML($xmlstr);

//retrieve the first element with name employee

$employee = $dom->getElementsByTagName('employee')->item(0);

//retrieve the first element with name employeeaddress

$employeeaddress = $dom->getElementsByTagName('employeeaddress')->item(0);

//create a new element

$newChild = $dom->createElement('newNode');

//create a text node

$textNode = $dom->createTextNode('newNode');

//append the text to the  newly created element

$newChild->appendChild($textNode);

//replace the employeeaddress element by newly created element

$employee->replaceChild($newChild,$employeeaddress);

echo "<HTML>";

echo "<Head>";

echo "<title>Example of DOMNode->replaceChild</title>";

echo "<Head>";

echo "<body>";

echo "<PRE>";

echo htmlentities($dom->saveXML());

echo "</PRE>";

echo "</body>";

echo "</HTML>";

?>

Output:

The expected output would be:

You can see the employeeaddress element is replaced by newNode.

<?xml version="1.0" encoding="UTF-8"?>
<employee>
      <employeename id="myId">test1</employeename>
      <newNode>newNode</newNode>
      <SSN>11111</SSN>
      <company>XYZ Corporation</company>
</employee>
 


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