格式化文件大小, 美化显示

Posted 2020-10-03 FreeSpider

/**
 * 格式化显示文件大小
 * @param $b
 * @param int $times
 * @return string
 */
function format_size($b,$times=0){
    if($b>1024){
        $temp=$b/1024;
        return formatSize($temp,$times+1);
    }else{
        $unit=‘B‘;
        switch($times){
            case ‘0‘:$unit=‘B‘;break;
            case ‘1‘:$unit=‘KB‘;break;
            case ‘2‘:$unit=‘MB‘;break;
            case ‘3‘:$unit=‘GB‘;break;
            case ‘4‘:$unit=‘TB‘;break;
            case ‘5‘:$unit=‘PB‘;break;
            case ‘6‘:$unit=‘EB‘;break;
            case ‘7‘:$unit=‘ZB‘;break;
            default: $unit=‘单位未知‘;
        }
        return sprintf(‘%.2f‘,$b).$unit;
    }
}