douzhang1299
2015-05-08 20:30
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PHP OOP - 类中的类数组[关闭]

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.

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我想知道如何在另一个对象中定义一个对象数组。 < p>例如,假设我有一个名为“User”的类,另一个名为“Address”的类。

用户可以列出无限数量的地址。 我该怎么做?

我的猜测是我需要在“User”类中声明一个“Address”对象数组,但我不知道该怎么做。< / p>

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3条回答 默认 最新

  • dou760663 2015-05-08 21:00
    已采纳

    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());
    
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