How can the code quality and structure impact the success of a PHP migration project?

Code quality and structure can greatly impact the success of a PHP migration project because poorly written code can lead to errors, bugs, and inefficiencies during the migration process. It is important to ensure that the code follows best practices, is well-structured, and is properly documented to make the migration smoother and more successful.

// Example of well-structured and high-quality PHP code
class User {
    private $username;
    private $email;

    public function __construct($username, $email) {
        $this->username = $username;
        $this->email = $email;
    }

    public function getUsername() {
        return $this->username;
    }

    public function getEmail() {
        return $this->email;
    }
}

$user = new User('john_doe', 'john.doe@example.com');
echo $user->getUsername();
echo $user->getEmail();