配列をXML形式に変換する

require_once('XML/Serializer.php');

$options = array(
      'addDecl'          => TRUE
    , 'encoding'         => 'UTF-8'
    , 'indent'           => ' '
    , 'linebreak'        => "\n"
    , 'indentAttributes' => TRUE
    , 'mode'             => 'simplexml'
    , 'rootName'         => 'response'
);

$serializer = &new XML_Serializer($options);
$result = $serializer->serialize($results);

if ($result === TRUE) {
    $xml = $serializer->getSerializedData();
}

echo $xml;