php 文件大小计算转换
/** * [tosize description] * @Author:XuXianGang * @Method: 文件格式大小 * @DateTime:2021-09-02T15:44:07+0800 * @param[type] $file_size [文件大小] * @return[type] [description] */ function tosize($file_size){ $file_size = $file_size-1; if ($file_size >= 1099511627776) $show_filesize = number_format(($file_size / 1099511627776),2) . " TB"; elseif ($file_size >= 1073741824) $show_filesize = number_format(($file_size / 1073741824),2) . " GB"; elseif ($file_size >= 1048576) $show_filesize = number_format(($file_size / 1048576),2) . " MB"; elseif ($file_size >= 1024) $show_filesize = number_format(($file_size / 1024),2) . " KB"; elseif ($file_size > 0) $show_filesize = $file_size . " b"; elseif ($file_size == 0 || $file_size == -1) $show_filesize = "0 b"; return $show_filesize; }