PHP | DOMNode isSameNode() Function

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The DOMNode::isSameNode() function is an inbuilt function in PHP which indicates if two nodes are the same node or not.

Syntax:

bool DOMNode::isSameNode( DOMNode $node )

Parameters: This function accepts a single parameter $node which holds the node to be compared.

Return Value: This function returns TRUE on success or FALSE on failure.

Below given programs illustrate the DOMNode::isSameNode() function in PHP:

Program 1:

<?php 
  
// Create a new DOMDocument 
$dom = new DOMDocument(); 
  
// Create a paragraph element with a namespace 
$p_element = $dom->createElementNS( 
      'my_namespace', 'p', 'zambiatek'); 
  
// Append the child to DOMDocument 
$dom->appendChild($p_element); 
  
// Check if the node is same 
$isSameNode = $dom->isSameNode($dom); 
  
// Check if the namespace is default or not 
if($isSameNode) { 
    echo 'Yes, $dom is same to itself.'; 
} 
?> 

Output:

Yes, $dom is same to itself.

Program 2:

<?php 
  
// Create a new DOMDocument 
$dom = new DOMDocument(); 
  
// Create a paragraph element with a namespace 
$p_element = $dom->createElementNS( 
      'my_namespace', 'p', 'zambiatek'); 
  
// Append the child to DOMDocument 
$dom->appendChild($p_element); 
  
// Create another new DOMDocument instance 
$dom2 = new DOMDocument(); 
  
// Check if nodes are same 
$isSameNode = $dom->isSameNode($dom2); 
  
// Check if the namespace is default or not 
if(!$isSameNode) { 
    echo 'No, $dom and $dom2 are different.'; 
} 
?> 