PHP - xPath query example

    
    <div class="my_div"> <h1>This is h1 tag</h1> <span id="my_span">This is span tag</span><br> <p data-hello="hello_world"> <a href="#">This is a tag</a> </p> <p data-hello="hello_world"> <a href="my_url.php">This is a tag</a><br> <a href="my_url.php">This is a tag</a> </p> </div>
    

    
    $html = file_get_contents('path/to/file.html'); //paste file or url

    $pattern = '//div[@class="my_div"]/h1/text()';
    print_r(xParser($html, $pattern));
    // output
    // Array
    // (
    //     [0] => This is h1 tag
    // )
    
    $pattern = '//div/span';
    print_r(xParser($html, $pattern));
    // output
    // Array
    // (
    //     [0] => This is span tag
    // )
    
    $pattern = '//p[@data-hello="hello_world"][2]/a/@href';
    print_r(xParser($html, $pattern));
    // output
    // Array
    // (
    //     [0] =>  href="my_url.php"
    //     [1] =>  href="my_url.php"
    // )
    
    
    function xParser($html, $pattern)
    {
        libxml_use_internal_errors(true);
        $dom = new \DOMDocument();
        $dom->loadHTML($html);
        libxml_clear_errors();
        $xpath = new \DOMXPath($dom);
        $nodes = $xpath->query($pattern);
        $results = [];
        foreach ($nodes as $node) {
            $results[] = $dom->saveHtml($node);
        }
        return $results;
    }