By default, error detail is enabled for your application. This means that when an error occurs you will be showed an error page with a detailed stack trace and error message. You may turn off error details by setting the debug option in your app/config/app.php file to false. It is strongly recommended that you turn off error detail in a production environment.
By default, the app/start/global.php file contains an error handler for all exceptions:
App::error(function(Exception $exception)
{
Log::error($exception);
});
This is the most basic error handler. However, you may specify more handlers if needed. Handlers are called based on the type-hint of the Exception they handle. For example, you may create a handler that only handles RuntimeException instances:
App::error(function(RuntimeException $exception)
{
// Handle the exception...
});
If an exception handler returns a response, that response will be sent to the browser and no other error handlers will be called:
App::error(function(InvalidUserException $exception)
{
Log::error($exception);
return 'Sorry! Something is wrong with this account!';
});
You may register an error handler that handles all "404 Not Found" errors in your application, allowing you to return custom 404 error pages:
App::missing(function($exception)
{
return View::make('errors.missing');
});
The Laravel logging facilities provide a simple layer on top of the powerful Monolog. By default, Laravel is configured to create daily log files for your application, and these files are stored in app/storage/logs. You may write information to these logs like so:
Log::info('This is some useful information.');
Log::warning('Something could be going wrong.');
Log::error('Something is really going wrong.');
The logger provides the seven logging levels defined in RFC 5424: debug, info, notice, warning, error, critical, and alert.
Monolog has a variety of additional handlers you may use for logging. If needed, you may access the underlying Monolog instance being used by Laravel:
$monolog = Log::getMonolog();