CSV to XML using PHP

csv_to_xml.php

<?php

// Map CSV file to array
$rows = array_map('str_getcsv', file('data.csv'));
$header = array_shift($rows);
$data = array();
foreach ($rows as $row)
{
	$data[] = array_combine($header, $row);
}

// Process Data if need be
foreach($data AS $key => $val)
{
	// Processing here
}

 //Creates XML string and XML document using the DOM 
$xml = new DomDocument('1.0', 'UTF-8'); 

//Add root node
$root = $xml->createElement('root');
$xml->appendChild($root);

// Add child nodes
foreach($data AS $key => $val) 
{	
	$entry = $xml->createElement('entry');
	$root->appendChild($entry);
		
	foreach($val AS $field_name => $field_value) 
	{	
		$field_name = preg_replace("/[^A-Za-z0-9]/", '', $field_name); // preg_replace has the allowed characters
		$name = $entry->appendChild($xml->createElement($field_name)); 
		$name->appendChild($xml->createCDATASection($field_value)); 
	}

}

// Set the formatOutput attribute of xml to true
$xml->formatOutput = true; 

// Output to screen
//header('Content-Type: text/xml');
//echo $xml->saveXML();

// Save as file
$xml->save('xml-import.xml'); // save as file

?>

someone knows how to make the code output xml including also the rss version like in the attchment please?
Thank you all for your help!

How to Download Automatically an xml format file direct from my computer or in download folder after converted into CSV TO XML