What are the potential pitfalls of using objects within objects in PHP classes?

Using objects within objects in PHP classes can lead to increased complexity and potential dependencies between objects. This can make the code harder to maintain and debug. To solve this issue, it's important to carefully design the relationships between objects and ensure that each object has a clearly defined responsibility. 

class User {
    private $name;
    private $address;

    public function __construct($name, $address) {
        $this->name = $name;
        $this->address = $address;
    }

    public function getName() {
        return $this->name;
    }

    public function getAddress() {
        return $this->address;
    }
}

class Address {
    private $street;
    private $city;

    public function __construct($street, $city) {
        $this->street = $street;
        $this->city = $city;
    }

    public function getStreet() {
        return $this->street;
    }

    public function getCity() {
        return $this->city;
    }
}

Keywords

nested objects object-oriented programming PHP classes circular references memory leaks

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