具有太多构造函数参数的PHP模型

Question

In my current project I am implementing an Model-View-Presenter pattern. Most of my classes that represent domain objects have too many constructor arguments. Take this for example (NOTE: This is just a made-up class, just assume that models need too many arguments):

class Person {
    private $id;
    private $first_name;
    private $middle_name;
    private $last_name;
    private $birthdate;

    private $school_name;
    private $school_year_level;

    ... more properties

    public function __constructor($id, $first_name, $middle_name, $last_name, .. etc){
        ... some code to set the properties
    }
}

Suppose this class has many independent values needed for construction (7+ values), what good design can I use? The values are fetched rows from a database.

EDIT: To provide additional info, my model has three layers:

• Models (Value Objects): Just a domain object with properties, and probably some methods for minimal processing of data.
• Data Access Objects: Communicates with the database. CRUD. Creates Model objects from fetched data.
• Service Objects: Provides an interface for the rest of the business logic interacts with data from the database.

Answer 1

You could use an associative array:

public function __construct($params){
    $this->id = $params['id'];
    // etc ...
}

Or the spread operator if you are using PHP 5.6+:

public function __construct(...$params){
    $this->id = $params[0];
    // etc ...
}

If you are under PHP 5.6 use func_get_args():

public function __construct(){
    $params = func_get_args();

    $this->id = $params[0];
    // etc ...
}

---

I would use the associative array solution because I prefer having the keys. Note that there are many other ways to solve your "issue" as @ivanivan said in his comment.