<?php

class Inventory {

	public $items = array();

	public static function created() {
		return !empty($_SESSION["inventory"]);
	}

	public static function sendContent() {
		return self::get()->items;
	}

	public static function get() {
		if(!self::created()) {
			$_SESSION["inventory"] = new Inventory();
		}
		return $_SESSION["inventory"];
	}

	private function _addItem($item) {
		$this->items[] = $item;
	}

	public static function addItem($item) {
		$inv = self::get();
		$inv->_addItem($item);
	}

	private function _removeItem($item) {
		unset($this->items[array_search($item, $this->items)]);
	}

	public static function removeItem($item) {
		$inv = self::get();
		$inv->_removeItem($item);
	}
}

?>