Constructor

Constructor

void __construct ([ mixed $args = "" [, $... ]] )

The constructor is the most useful of the two, especially because it allows you to send parameters along when creating a new object, which can then be used to initialize variables on the object

PHP  allows developers to declare constructor methods for classes. Classes which have a constructor method call this method on each newly-created object, so it is suitable for any initialization that the object may need before it is used.

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).

class Animal

{

    public $name = "No-name animal";

   

    public function __construct()

    {

        echo "I'm alive!";       

    }

}

Output

$animal = new Animal();