Implement Value Objects for Domain Modeling - 1000 PHP Tips - Quick tips and Courses for PHP Developers

Use Value Objects to represent domain concepts that are defined by their attributes rather than an identity. This enhances code readability and ensures data integrity.

final class Email
{
    private $email;

    public function __construct(string $email)
    {
        if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
            throw new InvalidArgumentException('Invalid email');
        }
        $this->email = $email;
    }

    public function __toString(): string
    {
        return $this->email;
    }
}