PHP | DOMDocument importNode() Function

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The DOMDocument::importNode() function is an inbuilt function in PHP which is used to return a copy of the node which need to import and associates it with the current document.

Syntax:

DOMNode DOMDocument::importNode( DOMNode $importedNode, bool $deep = FALSE )

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

$importedNode: This parameter holds the node which need to import.
$deep: This parameter holds the Boolean value. If it set to TRUE then it will recursively import the subtree under the importedNode.

Return Value: This function returns the copied node on success or FALSE, if it cannot be copied.

Below program illustrates the DOMDocument::importNode() function in PHP:

Program:

<?php 
  
// Create a new document 
$dom = new DOMDocument; 
  
// Load the XML document 
$dom->loadXML("<root><contact><email>abc@zambiatek.com</email> 
<mobile>+91-987654321</mobile></contact></root>"); 
  
// Use getElementsByTagName() function to search 
// all elements with given local tag name 
$node = $dom->getElementsByTagName("contact")->item(0); 
  
// Create a new document 
$dom1 = new DOMDocument; 
  
$dom1->formatOutput = true; 
  
// Load the XML document 
$dom1->loadXML("<root><contactinfo><email>abc@zambiatek.com</email> 
<mobile>+91-987654321</mobile></contactinfo></root>"); 
  
echo "Document before copying the nodes\n"; 
  
// Save the file in XML and display it 
echo $dom1->saveXML(); 
  
// Use importNode() function to import the node 
$node = $dom1->importNode($node, true); 
  
// Append child to the document 
$dom1->documentElement->appendChild($node); 
  
echo "\nDocument after copying the nodes\n"; 
  
// Save XML document and display it 
echo $dom1->saveXML(); 
  
?> 

Output:

Document before copying the nodes
<?xml version="1.0"?>
<root>
    <contactinfo><email>abc@zambiatek.com</email>
    <mobile>+91-987654321</mobile></contactinfo>
</root>
Document after copying the nodes
<?xml version="1.0"?>
<root>
    <contactinfo><email>abc@zambiatek.com</email>
    <mobile>+91-987654321</mobile></contactinfo>
    <contact><email>abc@zambiatek.com</email>
    <mobile>+91-987654321</mobile></contact>
</root>

Reference: https://www.php.net/manual/en/domdocument.importnode.php