update

wp-content/plugins/wpvivid-backuprestore/includes/class-wpvivid-compress-default.php

@@ -0,0 +1,81 @@
+<?php
+abstract class Wpvivid_Compress_Default{
+    public $last_error = '';
+
+    abstract public function compress($data);
+    abstract public function extract($files,$path = '');
+    abstract public function extract_by_files($files,$zip,$path = '');
+    abstract public function get_include_zip($files,$allpackages);
+    abstract public function listcontent($path);
+    abstract public function listnum($path , $includeFolder = false);
+
+    public function getLastError(){
+        return $this -> last_error;
+    }
+    public function getBasename($basename){
+        $basename = basename($basename);
+        $arr = explode('.',$basename);
+        return $arr[0];
+    }
+    public function _in_array($file,$lists){
+        foreach ($lists as $item){
+            if(strstr($file,$item)){
+                return true;
+            }
+        }
+        return false;
+    }
+    public function filesplit($max_size,$files){
+        $packages = array();
+        if($max_size == 0 || $max_size === '0M' || empty($max_size)){
+            $packages[] = $files;
+        }else{
+            $sizenum = 0;
+            $max_size = str_replace('M', '', $max_size);
+            $size = $max_size * 1024 * 1024;
+            $package = array();
+            $flag = false;
+
+            usort($files, function ($a, $b)
+            {
+                $a_size=filesize($a);
+                $b_size=filesize($b);
+                if ($a_size == $b_size)
+                    return 0;
+
+                if ($a_size < $b_size)
+                    return 1;
+                else
+                    return -1;
+            });
+
+            foreach ($files as $file)
+            {
+                $sizenum += filesize($file);
+                if($sizenum > $size)
+                {
+                    if(empty($package))
+                    {
+                        $package[] = $file;
+                        $packages[] = $package;
+                        $package = array();
+                        $sizenum = 0;
+                    }
+                    else
+                    {
+                        $packages[] = $package;
+                        $package = array();
+                        $package[] = $file;
+                        $sizenum = filesize($file);
+                    }
+
+                }else{
+                    $package[] = $file;
+                }
+            }
+            if(!empty($package))
+                $packages[] = $package;
+        }
+        return $packages;
+    }
+}