How can fopen() be utilized effectively for reading XML data in PHP?

To effectively read XML data in PHP using fopen(), you can open the XML file using fopen(), read its contents using fread(), and then parse the XML data using SimpleXML or any other XML parsing library in PHP.

$filename = 'data.xml';
$handle = fopen($filename, "r");
$xml_data = fread($handle, filesize($filename));
fclose($handle);

$xml = simplexml_load_string($xml_data);
// Now you can access and manipulate the XML data using $xml object