title: Adding and showing tags added to a post using php
body: <p>I am working on a social news website where user posts anything, website provides the tag option to the users, the tags can be "Politics" or "Entertainment" anything which depends on users and they can choose more than one tag ...
  so my question is how to store the tags of post in database that particular post has respective tags and how to fetch all the post from database when particular tag is selected ...
  same as this stackoverflow website</p>
  
  <p>Help me out....</p>