How can defining clear interfaces with get and set methods improve code quality in PHP?

Defining clear interfaces with get and set methods can improve code quality in PHP by promoting encapsulation and reducing direct access to class properties. This helps in maintaining a clean and organized codebase, making it easier to understand and modify the code in the future. Additionally, it allows for better control over data manipulation and validation within the class.

interface UserInterface {
    public function getName(): string;
    public function setName(string $name): void;
}

class User implements UserInterface {
    private $name;

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

    public function setName(string $name): void {
        $this->name = $name;
    }
}

$user = new User();
$user->setName("John Doe");
echo $user->getName(); // Output: John Doe