CodeIgniter Developer's Toolbar
The CodeIgniter Developer's Toolbar is a replica of CodeIgniter Profiler Library with additional functionality in order to help development teams with debugging and optimization.
Copy the files to the application/config, application/hooks and application/views folder as appropriate. Copy css/developer_toolbar, js/developer_toolbar to root directory (CodeIgniter installed).
CODEIGNITER VERSION 2.0.3+
Copy the file MY_Loader.php to the application/core folder.
$config['enable_hooks'] = TRUE;
Since CI Developer's Toolbar is a display_override hook.
By Default, The CI Developer's Toolbar is disabled.
$config['debug_mode'] = TRUE; - Enable Developer's Toolbar
$config['debug_mode'] = FALSE;- Disable Developer's Toolbar
Visit The wiki for more information.