CodeIgniter Developer Toolbar is a third party library based on Profiler Library with additional functionality for debugging and optimization.

• Support CI.2 and CI.3
• Support HMVC.

Copy the files to the application/third_party/DevelBar folder.

Copy the file core/MY_Loader.php to the application/core folder.

Copy the file controllers/develbarprofiler.php to the application/controllers folder.

Change permissions for cache folder chmod 777 application/cache

If you are using HMVC third party library, copy MX_Loader.php instead of MY_Loader.php to your core directory, and change the file name to MY_Loader.php instead of MX_Loader.php.

Open application/config/autoload.php :

$autoload['packages'] = array(APPPATH . 'third_party/DevelBar');

Open application/config/config.php :

$config['enable_hooks'] = TRUE;

Open application/config/hooks.php and add this line :

$hook['display_override'][] = array( 'class'	=> 'Develbar', 'function'	=> 'debug', 'filename'	=> 'Develbar.php', 'filepath'	=> 'third_party/DevelBar/hooks' );

Enable or disable Develbar, open application/third_party/DevelBar/config/config.php :

$config['enable_develbar'] = TRUE;

If you want to disable some sections within the developer toolbar,

Open application/third_party/DevelBar/config/config.php, and set the sections value to FALSE :

$config['develbar_sections'] = array( 'Benchmarks'	=> TRUE, 'Memory Usage'	=> TRUE, 'Request'	=> TRUE, 'Database'=> TRUE, 'Hooks'=> FALSE, // Disable Hooks Section 'Libraries'=> TRUE, 'Helpers'	=> FALSE, // Disable Helpers Section, 'Views'	=> TRUE, 'Config'	=> TRUE, 'Session'	=> TRUE, 'Models'	=> TRUE, 'Ajax' => TRUE, );

To auto check for available new version of CodeIgniter and DeveloperToolbar, you should set check_update option to TRUE, within application/third_party/DevelBar/config/config.php :

$config['check_update'] = TRUE;