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Codeigniter php frameworks: controllers part 7

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Codeigniter php frameworks, we will continue the next part or the last part of controllers, now is part number 7, didn’t read the part 6, please read these part first. In the part 7 we will learn about class constructors, if you intend to use a constructor in any of your controllers, you must place the following line of code like this parent::__construct(); .The reason this line is necessary is because your local constructor will be overriding the one in the parent controller class so we need to manually call it.
<?php
class Blog extends CI_Controller {
       public function __construct() {
            parent::__construct();
            // Your own constructor code
       }
}
?>

Constructors are useful if you need to set some default values, or run a default process when your class is instantiated. Codeigniter php frameworks. Constructors can return a value, but they can do some default work.
I have something for you to inform about reserved function names. Since your controller classes will extend the main application controller you must be careful not to name your functions identically to the ones used by that class, otherwise your local functions will override them. See Reserved Names at codeigniter user guide for a full list. Ok, I think this is the end of our learning about controllers, please stay at Codeigniter php frameworks.

This post of Codeigniter php frameworks: controllers part 7 is references from http://codeigniter.com/user_guide/general/controllers.html. 

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