in autoload.php

 public $helpers = [
        'general'
    ];

helper is loaded and helper file defined 2 functions

<?php

function datetimeformat($date)
{
    return date("Y-m-d H:i:s", strtotime($date));
}

function randomnumber()
{
    return "111";
} 

and in controller i called the helper but is not working

<?php

namespace AppControllers;


/**
 * Rating Controller For Admin
 */
class Rating extends BaseController
{

    public function index()
    {
        // Load either general_helper or general
        if ( helper('general_helper') || helper('general')) {
echo "test";exit();
        }

    }
}

in this code helper is not loaded i cant find what is the issue please any one have idea