Are there any recommended resources or tools for testing and debugging XPath queries in PHP applications?

When testing and debugging XPath queries in PHP applications, it can be helpful to use tools that allow you to easily test and validate your queries. One recommended resource is the PHP XPath Tester tool, which provides a user-friendly interface for testing XPath queries and viewing the results. Additionally, using a tool like Xdebug can help with debugging by allowing you to step through your code and inspect variables to identify any issues with your XPath queries.

// Example of using PHP XPath Tester tool to test and debug XPath queries
$xml = '<bookstore><book><title>Harry Potter</title></book></bookstore>';
$xpath = new DOMXPath(new DOMDocument());
$xpath->loadXML($xml);

$query = '//bookstore/book/title';
$nodes = $xpath->query($query);

foreach ($nodes as $node) {
    echo $node->nodeValue; // Output: Harry Potter
}