只有一个php文件，功能需要的都要。
文件上传，下载，压缩，解压，远程文件下载，文件权限管理，文件删除/增加，在线文件修改，自动编码。(There is only one PHP file, and all the functions need.
File upload, download, compression, decompression, remote file downloading, file permissions management, file deletion / increase, online file modification, automatic encoding.)