What is the relationship between DOMDocument() and DOMXpath() in PHP?

The relationship between DOMDocument() and DOMXpath() in PHP is that DOMDocument() is used to load and manipulate XML or HTML documents, while DOMXpath() is used to query elements within those documents using XPath expressions. By combining DOMDocument() and DOMXpath(), you can efficiently traverse and extract specific data from XML or HTML documents. 

// Create a new DOMDocument object
$doc = new DOMDocument();

// Load the XML or HTML content into the DOMDocument
$doc->loadHTMLFile('example.html');

// Create a new DOMXpath object
$xpath = new DOMXpath($doc);

// Use XPath query to select specific elements from the document
$elements = $xpath->query('//div[@class="example"]');

// Loop through the selected elements and do something with them
foreach ($elements as $element) {
    // Do something with the element
    echo $element->nodeValue;
}

Keywords

DOMDocument DOMXpath relationship PHP XML.

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