oop-destruct-unset

<?php

ini_set('display_errors', 1); 
ini_set('display_startup_errors', 1); 
error_reporting(E_ALL);

class BankAccount {

	private $agency;
	private $account;
	private $balance;

	public function __construct($agency, $account)
	{
		$this->agency = $agency;
		$this->account = $account;
	}

	public function __destruct()
	{
		echo 'Destructed';
	}

	public function getBalance()
	{
		if ($this->agency == 1 && $this->account = 100)
			$this->balance = 100;

		return $this->balance;
	}

}

$myAccount = new BankAccount(1, 100);
echo $myAccount->getBalance();			// return 100

unset($myAccount);				// echo 'Destructed'

/////////////////////////////////////////////////////////

$array = [0, 1, 2];
print_r($array);		// return Array ( [0] => 0 [1] => 1 [2] => 2 )

unset($array[1]);
print_r($array);		// return Array ( [0] => 0 [2] => 2 )