title: uninstall mongodb php driver and install a different version
body: <p>I'm using Ubuntu Xampp (Lampp) and currently on MongoDB <code>1.5.3</code> driver.</p>
  
  <p>I need to downgrade to <code>1.4.5</code>, but when re-installed the downgraded driver, it does not change in <code>phpinfo()</code>. Yes, I have restarted Apache.</p>
  
  <p>So, how do I uninstall the current one and install the downgraded version?</p>