网站文件在本地更新多了以后，要将本地更新文件上传服务器时候再一一找出更新过的文件比较麻烦。设计初衷就是为了解决这个问题，同时也为了练手。代码没有什么难度，主要是为了学习FTP传输和文件操控。设计中有两种文件扫描方式，对比扫描则是通过对比用户提供的时间了扫描本地更新文件；实时扫描则以服务器上文件时间与本地文件时间进行对比来扫描文件，因此最好服务器和本地系统时间相差不要太离谱。在D7和XP下开发。



-website updated in the local paper after more than that for local update server upload time again on January 1 updated to identify the papers trouble. Originally designed in order to solve this problem, but also to practice hand. Code not difficult, mainly to learn FTP file transfer and manipulation. Two design document scanning, contrast scanning is provided by comparing the user's local time scanning updates; While real-time scanning files on the server time to time with the local paper compared to scan documents, the best server and the local system the difference in time will not be too outrageous. In D7 and XP development.