title: How do I use the CakePHP Configure class?
body: <p>I am trying to use the <code>Configure</code> class in CakePHP, but I'm not sure if I am using it correctly. I have read through the cook book and the API, but I can't seem to do what I want.</p>
  
  <p>I have created a configuration file: <em>app/config/config.php</em>. I can directly edit this file and set variables in there and access them using <code>Configure::read()</code>.</p>
  
  <p>Is it possible to update the values of the configuration file from the application itself, i.e., from a controller? I have tried using <code>Configure::write()</code>, but this does not seem to change the value.</p>