php - 在闭包函数参数PHP中添加类-引发未捕获的TypeError

Question

我有3节课

<?php
namespace App;

class Address {

    private $houseNumber = '';
    private $street = '';
    protected $city = '';
    protected $county = '';
    public $postcode = '';
    public $country = '';
    private $contacts = [];

    public function setHouseNumber($provided_housenumber){
        $this->houseNumber = $provided_housenumber;
        return $this;
    }

    public function setStreet($provided_street){
        $this->street = $provided_street;
        return $this;
    }

    public function setPostCode($provided_postcode){
        $this->postcode = $provided_postcode;
        return $this;
    }

    public function setCounty($provided_county){
        $this->county = $provided_county;
        return $this;
    }

    public function setCountry($provided_country){
        $this->country = $provided_country;
        return $this;
    }
}

二等

<?php
namespace App;

 class Book {

    private $records = [];

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

}

三等

<?php
namespace App;

class Contact {

    private $name = '';
    public $email = '';

    public function setName($provided_name){
        $this->name = $provided_name;
        return $this;
    }

    public function setEmail($provided_mail){
        $this->email = $provided_mail;
        return $this;
    }

}

然后在索引文件中，我这样调用Book方法:

<?php

require_once __DIR__ . '/vendor/autoload.php';

use App\Contact;
use App\Book;
use App\Address;

# Create first contact
$contact = new Contact;
$contact->setName('Mr John Doe');
$contact->setEmail('john@doe.com');

# Add first contact to list of contacts
$contacts[] = $contact;

# Open new book
$book = new Book;

# Add first address with both contacts
$book->createAddress(function(Address $address) use ($contacts){ //<---- Here it throws Fatal error: Uncaught TypeError: Argument 1 passed to App\Book::createAddress() must be an instance of App\Address, instance of Closure given
    $address->setHouseNumber('33');
    $address->setStreet('Example street')->setCity('Cambridge');
    $address->setPostCode('CBF MB5');
    $address->setCounty('Cambridgeshire');
    $address->setCountry('GB');

    foreach($contacts as $contact){
        $address->addContact($contact);
    }
});

所以我很想在索引文件中做些什么-在Book的新实例中，我正在通过将其全部包装在匿名函数(关闭函数)中来执行方法createAddress()。

在该函数中，我设置了所有变量并将其传递给Book。但是以某种方式我不能在闭包函数中将Class称为参数-

Fatal error: Uncaught TypeError: Argument 1 passed to App\Book::createAddress() must be an instance of App\Address, instance of Closure given

因此，我在这里肯定缺少基本的东西，有人可以指导我完成吗？

Answer 1

public function createAddress(Address $address) // look, it wants an address!

您尝试通过闭包，这是全类同学所不要求的。所以放弃封闭。

$address = new Address();
$address->setHouseNumber('33');
$address->setStreet('Example street')->setCity('Cambridge');
$address->setPostCode('CBF MB5');
$address->setCounty('Cambridgeshire');
$address->setCountry('GB');

foreach ($contacts as $contact){
    $address->addContact($contact);
}

$book->createAddress($address);