How can special characters like "&" be properly handled in URLs when using the DOM class in PHP?

Special characters like "&" in URLs can be properly handled by using the urlencode() function in PHP to encode the special characters before adding them to the URL. This ensures that the special characters are properly formatted and do not cause any issues when used in the DOM class.

$url = "https://example.com/page.php?param1=" . urlencode("value1") . "&param2=" . urlencode("value2");
echo $url;