if ($_SERVER['HTTP_ACCEPT'] === 'application/json') {
header('Access-Control-Allow-Origin: *');
+ header('Cache-Control: max-age=10');
+ if (file_exists($rootdir)) {
+ header('Last-Modified: '.gmdate(DATE_RFC7231, filemtime($rootdir)));
+ }
+ else {
+ http_response_code(404);
+ }
$imgs = [];
foreach (glob("$rootdir/*.jpg") as $path) {
$target = preg_replace('{^(\.\./)*}', '', readlink($path));