title: Expire session while closing the browser in laravel 5.1
body: <p>I am using laravel 5.1 and <code>expire_on_close</code> is not working in firefox browser and I am using database as session driver.</p>
  
  <p>My config file is,</p>
  
  <pre><code>'lifetime' =&gt; 120,
  
  'expire_on_close' =&gt; true,
  </code></pre>
  
  <p>What is wrong with this code?</p>