__construct() in php

How __construct() will work in php

Introduced in the PHP 5.

PHP will call this method, when ever we create a new object. So it is used for the any initialisation before object start.
Parent constructors are not called implicitly in the child class. In order to get the parent constructors in child class
we need to add the statement parent::__construct() within the child constructor.

If the child doesn't contain any __construct(), then the parent class __construct() method will be inherited.

<?php
   class grandpa{
      public function __construct(){
         echo "I am in Tutorials Point"."\n";
      }
      }
   class papa extends grandpa{
      public function __construct(){
         parent::__construct();
         echo "I am not in Tutorials Point";
      }
   }
$obj = new papa();
?>

Output:
I am in Tutorials Point
I am not in Tutorials Point




<?php
   class grandpa{
      public function __construct(){
         echo "I am in Tutorials point";
      }
   }
   class papa extends grandpa{
   }
   $obj = new papa();
?>

Output:
I am in Tutorials point