Android notification on web site content updation

I am creating a website application. The website is actually coded in php. In the website there is an option to post comments by users who are logged in to the site. Actually I wanted  to show notification on the android device even when the application is not running . Can anyone please suggest an idea for doing this. Should I need to make any permission settings in the website for this.
Thanks in advance.
Android notification on web site content updation
===


I am creating a website application. The website is actually coded in php. In the website there is an option to post comments by users who are logged in to the site. Actually I wanted  to show notification on the android device even when the application is not running . Can anyone please suggest an idea for doing this. Should I need to make any permission settings in the website for this.
Thanks in advance.