辅助计算容量大小

支持获取文件夹大小
支持传入B、MB进行合适的单位转换

utils/FileSizeHelper.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace app\utils;
+
+use RecursiveDirectoryIterator;
+use RecursiveIteratorIterator;
+
+class FileSizeHelper
+{
+    /**
+     * 计算指定目录的大小
+     *
+     * @param string $directory 目录路径
+     * @return int 目录的大小（字节）
+     */
+    public static function getDirectorySize(string $directory): int
+    {
+        $size = 0;
+        $files = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($directory));
+        foreach ($files as $file) {
+            if ($file->isFile()) {
+                $size += $file->getSize();
+            }
+        }
+        return $size;
+    }
+
+    /**
+     * @param $bytes
+     * @param $precision
+     * @return string
+     */
+    public static function formatBytes($bytes, $precision = 2): string
+    {
+        $units = array('B', 'KB', 'MB', 'GB', 'TB');
+
+        $bytes = max($bytes, 0);
+        $pow = floor(($bytes ? log($bytes) : 0) / log(1024));
+        $pow = min($pow, count($units) - 1);
+
+        $bytes /= pow(1024, $pow);
+
+        return round($bytes, $precision) . ' ' . $units[$pow];
+    }
+
+    /**
+     * @param $megabytes
+     * @param $precision
+     * @return string
+     */
+    public static function formatMegaBytes($megabytes, $precision = 2): string
+    {
+        if($megabytes===-1){
+            return '∞';
+        }
+        $bytes = $megabytes * pow(1024, 2); // Convert megabytes to bytes
+        return self::formatBytes($bytes, $precision);
+    }
+}