CodePuzzling::tumblr('!'); : How to read/write root’s attributes in SimpleXMLElement

How to read/write root’s attributes in SimpleXMLElement

If you use SimpleXMLElement to read and write your XML documents, this trick is useful to read/write root element attributes. Suppose to have such a document:

this is an example
  ...

If you want to modify count or uniqueCount in PHP, you only need to do this:

try{
     // load the file
     $xml = simplexml_load_file($this->xl_sharedStrings);
} catch(Exception $e) {
	die("
Cannot parse file: ".$e->getMessage());
}

$xml['count'] = $count;
$xml['uniqueCount'] = $unique;
$xml->asXML($this->xl_sharedStrings);