>[info]判断文件大小 ```` $file=file_get_contents($old_image); $file_size = strlen($file); if($file_size>999999){ throw new ParameterException('请上传小于1M的刷脸照片'); } $old_image = $pic->pic_image; $old_len = strlen($old_image); $sublen = strlen($request->domain());