title: How to INNER JOIN 3 tables using CodeIgniter
body: <p>Can someone Tell me how to join 3 table with php?
  Example</p>
  
  <pre><code>SELECT FROM table1, table2,table on INNERJOIN -------------------
  </code></pre>
  
  <p>let I have 3 table.(question table ,answer table and category table)
  Here is example form my webpage.</p>
  
  <pre><code>Time remaining 30 minutes(I will get "30 minutes" form Category table)
  1. Question (from question table)
  2. answer (from answer table)
  </code></pre>
  
  <p>I don't know how to join 3 table.</p>