Object comparison

The PHP language provides several comparison operators that allow us to compare two different values, resulting in either true or false:

• ==: equal
• ===: identical
• !=: not equal
• <>: not equal
• !==: not identical
• <: less than
• >: greater than
• <=: less than or equal to
• >=: greater than or equal to

While all of these operators are equally important, let's take a closer look at the behavior of the equal (==) and identical (===) operators in the context of objects.

Let's take a look at the following example:

<?php

class User {
  public $name = 'N/A';
  public $age = 0;
}

$user = new User();
$employee = new User();

var_dump($user == $employee); // true
var_dump($user === $employee); // false

Here, we have a simple User class with two properties set to some default values. We then have two different instances of the same class, $user and $employee. Given that both objects have the same properties, with the same values, the equal (==) operator returns true. The identical...