PHP 中move_uploaded_file 上传中文文件名失败

move_uploaded_file(public/upload/files/2019/04-17/\开密二次开发.rar): failed to open stream: Invalid argument

<?php
$files = $_FILES['attachment']; // 上传的表单附件名
$name = iconv("UTF-8", "gb2312", $files['name']);
move_uploaded_file($files['tmp_name'], "/upload/$name");

elseif (!move_uploaded_file($this->filename, iconv('utf-8','gb2312',$filename))) {
            $this->error = 'upload write error';
            return false;
        }

SplFileobject::__construct(/upload\files\2019\04-16\资源.rar): failed to open stream: No such file or directory

 return iconv('utf-8','gb2312',$savename);

$return_data['url'] = '/'.UPLOAD_PATH.$new_path.iconv('gb2312','utf-8',$info->getSaveName());

$this->ajaxReturn($return_data);