Applying the Law of Demeter in PHP Code

class Car {
    public function start(): void {
        $this->checkFuel();
        $this->ignite();
    }
    
    private function checkFuel(): void {
        echo "Checking fuel level...\n";
    }
    
    private function ignite(): void {
        echo "Igniting the engine...\n";
    }
}

class Library {
    public function borrowBook(string $title): Book {
        $book = new Book($title);
        $book->issue();
        return $book;
    }
}

class Book {
    private string $title;
    
    public function __construct($title) {
        $this->title = $title;
    }
    
    public function issue(): void {
        echo "Book issued: ".$this->title."\n";
    }
}

class Printer {
    public function print(Document $document): void {
        $document->sendToPrinter();
    }
}

class Document {
    public function sendToPrinter(): void {
        echo "Document is being printed...\n";
    }
}

class House {
    private Door $door;
    
    public function __construct() {
        $this->door = new Door();
    }
    
    public function lockHouse(): void {
        $this->door->close();
    }
}

class Door {
    public function close(): void {
        echo "Door is closed.\n";
    }
}

class TemperatureConverter {
    private const CONVERSION_FACTOR = 9.0 / 5.0;
    
    public function celsiusToFahrenheit(float $celsius): string {
        return (int)(($celsius * self::CONVERSION_FACTOR) + 32);
    }
}

class Person {
    private string $address;
    
    public function __construct($address) {
        $this->address = $address;
    }

    public function getAddressDetails(): string {
        return "Address: " . $this->address->getFirstName() . " " . $this->address->getLastName() .
               ", " . $this->address->getStreet() . 
               ", " . $this->address->getCity() . 
               ", " . $this->address->getCountry() . 
               ", ZipCode: " . $this->address->getZipCode();
    }
}

class Address {
    private string $firstName;
    private string $lastName;
    private string $street;
    private string $city;
    private string $country;
    private string $zipCode;
    
    public function __construct(string $firstName, string $lastName, string $street, string $city, string $country, string $zipCode) {
        $this->firstName = $firstName;
        $this->lastName = $lastName;
        $this->street = $street;
        $this->city = $city;
        $this->country = $country;
        $this->zipCode = $zipCode;
    }

    public function getFirstName(): string {
        return $this->firstName;
    }
    
    public function getLastName(): string {
        return $this->lastName;
    }
    
    public function getStreet(): string {
        return $this->street;
    }
    
    public function getCity(): string {
        return $this->city;
    }
    
    public function getCountry(): string {
        return $this->country;
    }
    
    public function getZipCode(): string {
        return $this->zipCode;
    }
}

class Person {
    private string $address;
    
    public function __construct(string $address) {
        $this->address = $address;
    }

    public function getAddressDetails(): string {
        return $this->address->getAddressLine();
    }
}

class Address {
    private string $firstName;
    private string $lastName;
    private string $street;
    private string $city;
    private string $country;
    private string $zipCode;
    
    public function __construct(string $firstName, string $lastName, string $street, string $city, string $country, string $zipCode) {
        $this->firstName = $firstName;
        $this->lastName = $lastName;
        $this->street = $street;
        $this->city = $city;
        $this->country = $country;
        $this->zipCode = $zipCode;
    }
    
    public function getAddressLine(): string {
        return $this->firstName . " " . $this->lastName .
               ", " . $this->street .
               ", " . $this->city . 
               ", " . $this->country .
               ", ZipCode: " . $this->zipCode;
    }
}