update

wp-content/plugins/wpvivid-backuprestore/includes/customclass/class-wpvivid-remote.php

@@ -0,0 +1,28 @@
+<?php
+if (!defined('WPVIVID_PLUGIN_DIR')){
+    die;
+}
+abstract class WPvivid_Remote{
+    public $current_file_name = '';
+    public $current_file_size = '';
+    public $last_time = 0;
+    public $last_size = 0;
+
+    public $object;
+    public $remote;
+
+    abstract public function test_connect();
+    abstract public function upload($task_id,$files,$callback = '');  // $files = array();
+    abstract public function download($file,$local_path,$callback = ''); // $file = array('file_name' => ,'size' =>,'md5' =>)
+    abstract public function cleanup($files);  // $files = array();
+
+    public function formatBytes($bytes, $precision = 2)
+    {
+        $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 /= (1 << (10 * $pow));
+        return round($bytes, $precision) . '' . $units[$pow];
+    }
+}