Проблема с json в while?

<?
$files = array_diff(scandir("plug/lol/"), ['.','..']);
$lole = [
"count" => count($files)
];
//echo json_encode($lole);
foreach($files as $key=>$lol){
    $result = [
    $key-1=> $lol
    ];
    echo json_encode($result);
}
?>