index.php in codeigniter

  1. The index.php file in CodeIgniter serves as the entry point for all requests.
  2. It initializes the base path and application folder constants.
  3. The environment can be set based on the current server environment.
  4. The framework constants and global functions are defined to assist in the execution of the application.
  5. The CodeIgniter front-controller is loaded to handle all incoming requests.