title: Inserting form values in multiple row using php
body: <p>I have database structure like this</p>
  
  <p><img src="https://i.stack.imgur.com/vjj8x.png" alt="database structure"></p>
  
  <p>Now i have designed form to enter Fm and PM for different subject</p>
  
  <p><img src="https://i.stack.imgur.com/Hilt3.png" alt="entry form"></p>
  
  <p>Now how can I insert values from the above form in this database as multiple rows to be inserted at once</p>