Не удалось получить текущее состояние процесса обмена

function UnZip($file_name, $last_zip_entry = "", $start_time = 0, $interval = 0)
   {
      //Function and securioty checks
      if(!function_exists("zip_open"))
         return false;
      $dir_name = substr($file_name, 0, strrpos($file_name, "/")+1);
      if(strlen($dir_name) <= strlen($_SERVER["DOCUMENT_ROOT"]))
         return false;

      $hZip = zip_open($file_name);
      if(!$hZip)
         return false;
      //Skip from last step
      if($last_zip_entry)
      {
         while($entry = zip_read($hZip))
            if(zip_entry_name($entry) == $last_zip_entry)
               break;
      }

      //Continue unzip
      while($entry = zip_read($hZip))
      {
         $entry_name = zip_entry_name($entry);
         //Check for directory
         zip_entry_open($hZip, $entry);
         if(zip_entry_filesize($entry))
         {
            $file_name = $dir_name.$entry_name;
            CheckDirPath($file_name);
            $fout = fopen($file_name, "wb");
            if(!$fout)
               return false;
            while($data = zip_entry_read($entry, 102400))<------------------------ line 420 
            {
               $data_len = function_exists('mb_strlen') ? mb_strlen($data, 'latin1') : strlen($data);
               $result = fwrite($fout, $data);
               if($result !== $data_len)
                  return false;
            }
         }
         zip_entry_close($entry);

         //Jump to next step
         if($interval > 0 && (time()-$start_time) > ($interval))
         {
            zip_close($hZip);
            return $entry_name;
         }
      }
      zip_close($hZip);
      return true;
   }

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 in C:\inetpub\wwwroot\bitrix\modules\iblock\classes\general\iblock.php on line 2108