Online PHP editor | output for YNJlJ

<?php /** * * @author Kyle @ Iezon * @copyright (c) 2016 - 2017, Iezon * * Controller for Tax and Payments * **/ namespace Iezon\Products; class Item { public function __construct($product_id) { // load product from database } public function cost() { return 1000; } } class TaxReturn { const Tax = 0.2; const TaxPercent = 20; private $_total = 0; private $_item = []; public function __construct() { $stored = $_SESSION['total']; if(empty($stored)) return; $this->_total = $stored; } public function append(Item $item) { $this->_item[] = $item; $this->_total = $this->_total + $item->cost(); return $this; } public function retrieve() { return [ 'total' => $this->_total, 'tax_total' => (($this->_total / 100) * self::Tax) + $this->_total ]; } } session_start(); $iezon = []; $iezon['payment'] = [ 'object' => new TaxReturn(), 'disclose' => [] ]; $iezon['payment']['object']->append(new Item('Some Id')); $iezon['payment']['disclose'] = $iezon['payment']['object']->retrieve(); echo 'Total (' . TaxReturn::TaxPercent . '%) : ' . $iezon['payment']['disclose']['tax_total'];