PHP[OOP] - How to call class constructor manually?

Question

Please see the code bellow:

01. class Test {
02.     public function __construct($param1, $param2, $param3) {
03.         echo $param1.$para         


        

Answer 1

It is not possible to prevent the constructor from being called when the object is constructed (line 9 in your code). If there is some functionality that happens in your __construct() method that you wish to postpone until after construction, you should move it to another method. A good name for that method might be init().

Why not just do this?

class Test {
    public function __construct($param1, $param2, $param3) {
        echo $param1.$param2.$param3;
    }
}

$ob = new Test('p1', 'p2', 'p3');

EDIT: I just thought of a hacky way you could prevent a constructor from being called (sort of). You could subclass Test and override the constructor with an empty, do-nothing constructor.

class SubTest extends Test {
    public function __construct() {
        // don't call parent::__construct()
    }

    public function init($param1, $param2, $param3) {
        parent::__construct($param1, $param2, $param3);
    }
}

$ob = new SubTest();
$ob->init('p1', 'p2', 'p3');

This is might make sense if you're dealing with some code that you cannot change for some reason and need to work around some annoying behavior of a poorly written constructor.