title: How to destroy session_id() in php?
body: <blockquote>
  <p><strong>Possible Duplicate:</strong><br />
  <a href="https://stackoverflow.com/questions/2241769/php-how-to-destroy-the-session-cookie-correctly">(PHP) How to destroy the session cookie correctly?</a></p>
  </blockquote>
  
  <p>I'm doing a shopping cart in PHP. I am using <code>session_id()</code> to identify individual users. After saving the product order, I need to destroy the <code>session_id</code>. How will I do that?</p>