Read the Full Tutorial and Download the full source code here:
https://www.sourcecodester.com/tutorial/javascript/15853/creating-download-page-countdown-using-php-and-javascript-tutorial

For more source codes, please visit https://www.sourcecodester.com/. We have so many example projects prepared and uploaded on the website that you may use. Don’t forget to subscribe to my channel and hit the notification bell to keep updated on my new uploads.