Upload Files to Web Server Directory with PHP
LU Tong-fu · Journal of Jiamusi University · 2006
There are many ways to save files after being uploaded to the server.One common method is to rename the files by adding the uploading date to original file to keep a unique name for each file.However,there is a disadvantage due to the prefix of the file name: it is difficult to query a specific file.This method was improved by the authors,which can query a specific file easily.