title: how to get num row where object by other table use codeigniter
body: <p>I have 2 tables. Consider tb_burung and tb_data.
  This is the structure of tb_burung:</p>
  
  <p><a href="https://i.stack.imgur.com/iluLq.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/iluLq.png" alt="enter image description here"></a></p>
  
  <p>This is the structure of tb_data: <a href="https://i.stack.imgur.com/15Deb.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/15Deb.png" alt="table structure"></a></p>
  
  <p>I want to get the number of rows of tb_data order id_burung for viewing on a page like this:
  <a href="https://i.stack.imgur.com/o9P6s.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/o9P6s.png" alt="output page"></a></p>