Original and unsanitized filename at the time it was uploaded
Returned value is also entity encoded if $page’s output formatting state is ON. For files uploaded in ProcessWire 3.0.212 or newer. Falls back to current file basename for files that were uploaded prior to 3.0.212.
Available since version 3.0.212.
$string = $pagefile->uploadName();
API reference based on ProcessWire core version 3.0.225