title: how to use IN operator in laravel query (eleqouent and raw query)?
body: <p>I need to use the <code>IN</code> operator to get the data from the database. I tried using it as below and got an error:</p>
  
  <pre><code>$pr =DB::('select * from prstuff p where p.pid in (select pid from prdrop)'); 
  </code></pre>
  
  <p>I am new to Laravel and don't know exactly how to use the operators like <code>IN</code>, so please explain to me how to use it.</p>