` ~~~ /** * @param $size * @param string $delimiter * @return string * @author: LuckyHhy <jackhhy520@qq.com> * @date: 2020/1/9 * @name: format_bytes * @describe:格式化数据 */ function formBytes($size, $delimiter = '') { $units = ['B', 'KB', 'MB', 'GB', 'TB', 'PB']; for ($i = 0; $size >= 1024 && $i < 5; $i++) { $size /= 1024; } return round($size, 2).$delimiter.$units[$i]; } ~~~ `