I am a web developer and working on different websites. Some websites are live (url: http://www.example.com) & some are on staging (url: http://demo.example.com) domain (during development).
When we update styling (in css files) or fixing responsiveness issues (in css or js files) and update files using FTP (FileZilla) that changes are updated on my pc but on other browsers (of mobile) that changes are not updated.
If we are making changes on live website then it is impossible to update every visitor's or customer's browser cache.
MY QUESTION: How can furcefully update browser cache for all visitors of my website to show final updated version of my site. Specially on mobile phone browsers where Ctrl+F5 or Ctrl+Shift+R commands are not available to force update.
Right now, I am working on simple php, html & css files. My website main files are in .php & styling in .css files. The same issue is many times face for WordPress websites as well but, this time core PHP & html files shows same issue.
The website is on subdomain of another website that is hosted on NGINX server so .htaccess file do not work there.
