<?php /** * @param string $identifier * @return array{ * upload_id: string, * fieldname: string, * filename: string, * time_start: int, * time_last: int, * speed_average: int, * speed_last: int, * bytes_uploaded: int, * bytes_total: int, * files_uploaded: int, * est_sec: int * }|null */ function uploadprogress_get_info(string $identifier): ?array {}