how to call one controller function to another controller in laravel 5.6 code example

Example 1: laravel access controller method from another controller

// Include the other controller in this controller
use App\Http\Controllers\TasksController;

// Instantiate other controller class in this controller's method
$tasks_controller = new TasksController;
// Use other controller's method in this controller's method
$tasks_controller->postNotification($comment_content, $author);

Example 2: laravel call controller method from another controller

return \App::call('bla\bla\ControllerName@functionName');