title: Codeigniter how to set constant value dynamically
body: <p>So i have set a constant value in my config/constants.php file</p>
  
  <pre><code>define('CONST_VAR', 'abc');
  </code></pre>
  
  <p>Now can I change the constant value on the run while using my app ? if so, how do I do it ?</p>