Call to undefined method CI_Controller::Controller() - php

Question

I have got this controller:
class Start extends CI_Controller{
var $base;
var $css;
function Start()
{
parent::Controller(); //error here.
$this->base = $this->config->item('base_url'); //error here
$this->css = $this->config->item('css');
}
function hello($name)
{
$data['css'] = $this->css;
$data['base'] = $this->base;
$data['mytitle'] = 'Welcome to this site';
$data['mytext'] = "Hello, $name, now we're getting dynamic!";
$this->load->view('testView', $data);
}
}
it tells me in this line:
parent::Controller(); //error here.
Call to undefined method CI_Controller::Controller()
If I remove that line..I get an error for the next line that says..
Call to a member function item() on a non-object
How do I prevent such errors form happening?

Answer 1

If you're using CI 2.x then your class constructor should look like this:
public function __construct()
{
parent::__construct();
// Your own constructor code
}
read more in user guide

Answer 2

In CodeIgniter 2, the constructor is named __constructor and not the class name. So you need to call parent::__construct() instead of parent::Controller()
Here's an article that you can read that shows one major difference between CodeIgniter 1.x and CodeIgniter 2.x
http://ulyssesonline.com/2011/03/01/differences-between-codeigniter-1-7-2-and-2-0-0/

Answer 3

If you're running your Codeigniter project via Xampp or a similar server add the following code to the bottom of your config.php file in the following directory; ci_project/application/config/config.php
function my_load($class) {
if (strpos($class, 'CI_') !== 0) {
if (is_readable(APPPATH . 'core' . DIRECTORY_SEPARATOR . $class . '.php' )) {
require_once (APPPATH . 'core' . DIRECTORY_SEPARATOR . $class . '.php');
}
}
}
spl_autoload_register('my_load');
The above code would help to; load class in core folder.
I'm certain this works in the following setup; CI-3+, Xampp, Php5.6, and or 5.6+
Also, you can then decide to create and allow other classes to reference your own Controller (which extends the original CI_Controller) by creating a file named MY_Controller.php in the following directory: ci_project/application/core/ and adding the following code in it;
<?php
class MY_Controller extends CI_Controller {
}
?>
That way you can always just reference or extend the other Classes to your own Controller (MY_Controller) throughout the rest of the project e.g.
class Admin extends MY_Controller {
//your function here
}
I hope this helps.