How can PHP functions be structured to efficiently extract and manipulate specific HTML elements for dynamic content generation?

To efficiently extract and manipulate specific HTML elements for dynamic content generation in PHP, you can utilize functions like `file_get_contents()` to fetch the HTML content from a URL or a file, and then use `DOMDocument` and `DOMXPath` classes to parse and extract the desired elements based on their tags, classes, or attributes.

// Function to extract and manipulate specific HTML elements
function extractHTML($url, $element) {
    $html = file_get_contents($url);
    $dom = new DOMDocument();
    @$dom->loadHTML($html);
    
    $xpath = new DOMXPath($dom);
    $elements = $xpath->query($element);
    
    foreach ($elements as $element) {
        // Manipulate the extracted element here
        echo $element->nodeValue;
    }
}

// Example usage
extractHTML("https://example.com", "//div[@class='content']");