phpでxmlをオブジェクトに変換する例

$xml= "123456";

$objectxml = simplexml_load_string($xml);

$xmljson= json_encode($objectxml );

$xmlarray=json_decode($xmljson,true);

$xml= "<xml><appid>123456</appid></xml>";//XML file
$objectxml = simplexml_load_string($xml);//convert the file into an object
$xmljson= json_encode($objectxml );//convert the object to JSON
$xmlarray=json_decode($xmljson,true);//convert json to array