What are the limitations of using PHP for refreshing parent windows in web applications?

When using PHP to refresh parent windows in web applications, a limitation is that PHP is a server-side language and cannot directly interact with the client-side browser. To overcome this limitation, you can use JavaScript to trigger a refresh on the parent window after a PHP action is completed.

<?php
// Perform some PHP action here

echo '<script>window.opener.location.reload(); window.close();</script>';
?>