新增字节自动格式化易读单位

src/Library/Util.php

@@ -387,4 +387,27 @@ final class Util
 
         return [$content, $filePath];
     }
+
+    /**
+     * 字节自动格式化易读单位
+     * @param float $bytes
+     * @return string
+     */
+    public static function prettyBytes(float $bytes): string
+    {
+        $step = pow(1024, 4);
+        if ($bytes >= $step) {
+            return round($bytes / $step, 2) . 'TB';
+        }
+        $step = pow(1024, 3);
+        if ($bytes >= $step) {
+            return round($bytes / $step, 2) . 'GB';
+        }
+        $step = pow(1024, 2);
+        if ($bytes >= $step) {
+            return round($bytes / $step, 2) . 'MB';
+        }
+        $step = 1024;
+        return round($bytes / $step, 2) . 'KB';
+    }
 }