<?php function format_filesize($filesize) { if ($filesize < 1024) { return $filesize.'byte'; } else if (($size = round($filesize/1024,2)) < 1024) { return $size.'KB'; } else if (($size = round($filesize / (1024*1024), 2)) < 1024) { return $size.'MB'; } else { return round($filesize / (1024*1024*1024), 2).'GB'; } } ?>