Object of a class inside another class

Question

class date{
    public $now,$today;
    public function __construct(){
        $now = new DateTime("now");
        $today = new DateTime("today");
    }
}

$date= new date();
echo $date->$now->format('l, jS F Y, g:i A');

The code is not working with error

Notice: Undefined property: date::$now

As per OOP concept i need to declare $now and $today inside the class outside any function. but php doesn't need declaration of variables.

What's the correct method?

Answer 1

You are declaring now and today as local variables to the constructor function, not instance variables of the class. You need to then reference them using $this

class date{
    public $now;
    public $today;

    public function __construct(){
        $this->now = new DateTime("now");
        $this->today = new DateTime("today");
    }
}

You might also want to rename that class so it's not confused with the built in date method.

Answer 2

Here you have the correct form of OOP in php:

<?php
class date{
        public $now;
        public $today;

        public function __construct(){
                $this->now = new DateTime("now");
                $this->today = new DateTime("today");
        }
}

$date= new date();
echo $date->now->format('l, jS F Y, g:i A');
?>