In what situations would using XPath be recommended for processing XML data in PHP, and how does it enhance data extraction?

Using XPath in PHP for processing XML data is recommended when you need to extract specific elements or attributes from an XML document. XPath allows you to navigate through the XML structure using path expressions, making it easier to target and extract the desired data. This enhances data extraction by providing a more precise and efficient way to access and manipulate XML data.

// Load the XML file
$xml = simplexml_load_file('data.xml');

// Use XPath to extract specific elements
$books = $xml->xpath('//book');

// Loop through the extracted elements
foreach ($books as $book) {
    echo $book->title . '<br>';
}