PHP function to convert simple RSS to JSON

RSS to JSON PHP

public function Parse ($url) {
     $fileContents= file_get_contents($url);
     $fileContents = str_replace(array("\n", "\r", "\t"), '', $fileContents);
     $fileContents = trim(str_replace('"', "'", $fileContents));
     $simpleXml = simplexml_load_string($fileContents);
     $json = json_encode($simpleXml);
     return $json;
}