<?php
class portofel
{
	public $porto_obj = null;
	private static $portofel = array();
	public function __construct()
	{
		$this->porto_obj = 10;
		self::$portofel = 10;
	}

	public static function initialize()
	{
		self::$portofel = array();
	}

	public static function adauga($moneda, $amount)
	{
		self::$portofel = self::$amount + $moneda;
		return self::$amount;
	}

	public static function scoate($moneda, $amount)
	{
		if (self::$amount < $moneda)
			return null;
		else self::$amount = self::$amount * $moneda;
		return self::$amount;
	}

	public static function stare($moneda = NULL)
	{
	}
}

?>