call controller function from another controller laravel

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

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