title: how to give desktop notification for my php web app?
body: <p>I was create one small application in PHP, for admin and client communication purpose. 
  Now I need to show desktop notification while the admin send any message to client.if any updates happen in the database, it should show desktop notification. </p>
  
  <p>1) I want immediate desktop notification like facebook. how could the UI comes to know the modification is done on database.?</p>
  
  <p>2) When the insert or update happens in the database for particular users, and 
  the particular user only have to receive the notification. How to do this.?    </p>
  
  <p>Any one please give some suggestion to make desktop notification as per I want</p>
  
  <p>Thank you</p>