PHP OOP - 类中的类数组[关闭]

Question

I was wondering how you can define an array of objects within another object.

For example, let's say I have a class called "User", and another class called "Address".

A user can list an unlimited number of addresses. How do I do this?

My guess is that I need to declare an array of "Address" objects within the "User" class, but I am not sure how to do it.

Answer 1

Make a class, with a property that is an array, then add to the array:

<?php

class User
{
    private $addresses = [];

    public function addAddress(Address $address)
    {
        $this->addresses[] = $address;
    }

    public function getAddresses()
    {
        return $this->addresses;
    }
}

class Address
{
    private $street;

    public function __construct($street)
    {
        $this->street = $street;
        // ... etc
    }
}

$user = new User();
$user->addAddress(new Address("Foo"));
$user->addAddress(new Address("Bar"));

var_dump($user->getAddresses());