When dealing with structured XML data in PHP, what are the best practices for optimizing performance, particularly in terms of data structure creation and storage?

When dealing with structured XML data in PHP, one of the best practices for optimizing performance is to use SimpleXML for parsing and manipulating XML data efficiently. Additionally, storing the parsed data in arrays or objects can help improve performance by reducing the need for repeated parsing of the XML. Another tip is to cache the parsed XML data to avoid re-parsing the same data multiple times.

// Load XML data using SimpleXML
$xml = simplexml_load_file('data.xml');

// Convert SimpleXML object to array for better performance
$data = json_decode(json_encode($xml), true);

// Cache the parsed XML data for future use
file_put_contents('cached_data.json', json_encode($data));