PHP | DOMNodeList count() Function

The DOMNodeList::count() function is an inbuilt function in PHP which is used to get the number of nodes in the list.

Syntax:

int DOMNodeList::count( void )

Parameters: This function doesn’t accept any parameter.

Return Value: This function returns the number of nodes in the list.

Below examples illustrate the DOMNodeList::count() function in PHP:



Example 1:

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<?php
  
// Create a new DOMDocument instance
$document = new DOMDocument();
  
// Create a div element
$element = $document->appendChild(new DOMElement('div'));
  
// Create a h1 element
$text1 = new DOMElement('h1', 'GeeksforGeeks');
  
// Create another h1 elements
$text2 = new DOMElement('h1', 'Another GeeksforGeeks');
  
// Append the nodes
$element->appendChild($text1);
$element->appendChild($text2);
  
// Get all elements with tag name 'h1'
$elements = $document->getElementsByTagName('h1');
  
// Count the elements
echo $elements->count();
?>

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Output:

2

Example 2:

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<?php
  
// Create a new DOMDocument instance
$document = new DOMDocument();
  
// Create a div element
$element = $document->appendChild(new DOMElement('div'));
  
// Create a h1 element
$text1 = new DOMElement('h1', 'GeeksforGeeks');
  
// Create another h1 elements
$text2 = new DOMElement('h1', 'Another GeeksforGeeks');
  
// Append the nodes
$element->appendChild($text1);
$element->appendChild($text2);
  
// Get all elements with tag name 'h1'
$elements = $document->getElementsByTagName('h1');
   
// Count the elements
echo 'Before removing: ';
echo $elements->count() . "<br>";
  
// Remove  a child
$element->removeChild($text2);
  
// Get all elements with tag name 'h1'
$elements = $document->getElementsByTagName('h1');
   
// Count the elements
echo 'After removing: ';
echo $elements->count();
?>

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Output:

Before removing: 2
After removing: 1

Reference: https://www.php.net/manual/en/domnodelist.count.php




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