title: Fatal error: Class 'Model' not found in CodeIgniter
body: <p>My CI version is CI2.3. I'm running <a href="http://www.phpeveryday.com/articles/CodeIgniter-Preparing-Database-P162.html" rel="noreferrer">this php code</a> in my local host. I followed all the steps given there but I'm getting this error don't know why? and I changed Controller to CI_Controller. <code>Hello world Program</code> worked finely. This link code is not working. please need  help!</p>