Overloading function construct when extends class PHP

Question

i have two class:

class BaseClass
{
   public function __construct()
   {
       $this->init();
   }

   private function init()
   {
      //dosomething
   }
}

class Myclass extends BaseClass
{
   public function __construct()
   {

   }
}

now when i create:

$myclass = new Myclass;

function init is not running, somebody can help me?

thpl · Accepted Answer · 2014-03-04 15:30:43Z

5

That is because you are overriding your constructor within your child class. Just leave it out when you are not processing any tasks that differ from your parents constructor or call your parents constructor like that

class Myclass extends BaseClass
{
   public function __construct()
   {
       parent::__construct(); // Call the parents constructor
       // Do some stuff that explicitly belongs to the child class
   }
}

Let's take a look on what the PHP docs say on it:

Note: Parent constructors are not called implicitly if the child class defines a constructor. In order to run a parent constructor, a call to parent::__construct() within the child constructor is required. If the child does not define a constructor then it may be inherited from the parent class just like a normal class method (if it was not declared as private).

Further reading:

PHP Docs - Constructors and Destructors

edited Mar 4, 2014 at 15:30

answered Feb 19, 2014 at 10:57

thpl

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1 Comment

John Aston Over a year ago

$myclass = new Myclass('Name', 'Age', 'Coder'); now, i want in function init of class BaseClass, i can get value of parameter ('Name','Age','coder'), can u help me?

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