I cant think what mechanism you have put in place that requires a republish of the website to allow the users to see new or updated versions of these spreadsheets.
This site is really for people having trouble getting wamp to run and not how to code websites.
I would have provided an upload page that stores these files in a folder ( not under the DocumentRoot) and a view whats there page, that allows a click on a filename to download that file.
Now you can store the filenames in a database with a link to the actual folder and file where a file lives or you can just write some php to list the contents of the folder(s) containing the speardsheets.
Why does it require a republish to make these files visible?
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(Windows 10 Pro 64bit) (Wampserver 3.3.4 64bit) Aestan Tray Menu 3.2.5.4
<Apache versions MULTIPE> <PHP versions MULTIPLE> <MySQL Versions MULTIPLE>
<MariaDB versions MULTIPLE> <phpMyAdmin versions MULTIPLE> <MySQL Workbench 8.0.23>Read The Manuals Apache --
MySQL --
PHP --
phpMyAdminGet your Apache/MySQL/mariaDB/PHP ADDONs here from the
WAMPServer alternate Repo-X-X-X-
Backup your databases regularly Here is How dont regret it later! Yes even when developing -X-X-X-