A fairly simple snippet questions

<?php
//Getting the parameter from the snippet call.  The default is 0
$input = (isset($input))? $input : 0;

//This function pulls the XML file while sending a user agent to the server.
function get_xml_specify_ua($xml_file_url,$user_agent_string)  
{  
  $result = '';  
    $opts = array(  
      'http' => array(  
        'method'  => 'GET',  
        'header'  => "User-Agent: $user_agent_string"  
      )  
    );  
    $context  = stream_context_create($opts);  
    $result = file_get_contents($xml_file_url, false, $context);  
    
  return $result;  
}  

//Calling the above function and sending in the hardcoded parameters
$xml = get_xml_specify_ua(  
  'http://serverurl.com:8000/admin.cgi?pass=passgoeshere&mode=viewxml&page=4',  
  'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.6) Gecko/20070725 Firefox/2.0.0.6'  
);  

//Parsing the XML with SimpleXML

$xmlData = new SimpleXMLElement($xml);

//Returning the title from the location specified in $input (passed in through the snippet call)
return $xmlData->SONGHISTORY->SONG[$input]->TITLE;
?>

return $xmlData->SONGHISTORY->SONG[$input]->TITLE;

return $xmlData->SONGHISTORY->SONG[(int)$input]->TITLE;