<?php

class ShoppingCart {
	
	private $data = [];
		
	public function add(string $name, int $count = 1) {
		if (isset($this->data[$name])) {
			$this->data[$name] += $count;
		} else {
			$this->data[$name] = $count;
		}
	}
	
	public function remove(string $name) {
		if (!isset($this->data[$name])) {
			return;
		}
		unset($this->data[$name]);
	}
	
	public function __toString() {
		$result = "Content:\n";
		foreach ($this->data as $name => $count) {
			$result .= "  $name : $count\n";
		}		
		return $result;
	}
	
}

// Exercise 1 

$cart = new ShoppingCart();
$cart->add('milk', 1);
$cart->add('bread', 1);
$cart->add('basil', 1);
$cart->add('milk', 1);
$cart->remove('basil');
print($cart);