Custom helper is not working in codeigniter v3
<p>I create two helper files in helper folder. But when I trying to include both helper I am getting error. </p>

<blockquote>
  <p>Unable to load the requested file: helpers/web_helper.php</p>
</blockquote>

<p><strong>MY_array_helper.php</strong></p>

<pre><code>&lt;?php

function print_pre($array= array()){
    echo "&lt;pre&gt;";
    print_r($array);
    echo "&lt;/pre&gt;";
}
</code></pre>

<p><strong>MY_web_helper.php</strong></p>

<pre><code>&lt;?php

function test(){
    echo "working";

}
</code></pre>

<p><strong>Welcome.php</strong></p>

<pre><code>&lt;?php
defined('BASEPATH') OR exit('No direct script access allowed');



class Welcome extends CI_Controller {

    public function __construct(){
        parent::__construct();
        $this-&gt;load-&gt;helper('array_helper');
        $this-&gt;load-&gt;helper('web_helper');
    }
</code></pre>