Withdrawal

Withdrawal

<?php

class Withdrawal{
    public $money = 0;
    function __construct($money){
        $this->money = $money;
    }
    public function total(){
        return $this->money;
    }
}

class Fee{
    function __construct($withdrawal, $item) {
        $withdrawal->money = $withdrawal->money - $item->money;
    }
    
}

class Bounty{
    function __construct($money){
        $this->money = $money;
    }
}
class OldBounty{
    function __construct($money){
        $this->money = $money;
    }
}

class Money {
    function __construct($money){
        $this->money = $money;
    }
    function getMoney(){
        return $this->money;
    }
}
class Exchange {
    function __construct($money, $item) {
        $money->money = $money->getMoney() * $item->rate;
    }
}
class USD {
    public $rate = 6.5;
    function __construct(){
        
    }
}
class HKD {
    private $rate = 1.5;
    function __construct(){
        
    }
}
class RMB {
    private $rate = 3.5;
    function __construct(){
        
    }
}



$withdrawal = new Withdrawal(100);
$fee = new Fee($withdrawal, new Bounty(20));
$fee = new Fee($withdrawal, new OldBounty(10));

printf("%f \n",$withdrawal->total());

$money = new Money($withdrawal->total());
$exchange = new Exchange($money, new USD());
printf("%f \n",$money->getMoney());