如何在laravel中为两个或多个表id创建相同的foriegn_key

php artisan make:migration create_users_table --create=users
php artisan make:migration create_orders_table --create=orders

// create_users_table migration file
public function up()
{
    Schema::create('users', function (Blueprint $table) {
        $table->id();
        // other fields
        $table->unsignedBigInteger('order_id');
        $table->foreign('order_id')->references('id')->on('orders');
        $table->timestamps();
    });
}

// create_orders_table migration file
public function up()
{
    Schema::create('orders', function (Blueprint $table) {
        $table->id();
        // other fields
        $table->unsignedBigInteger('user_id');
        $table->foreign('user_id')->references('id')->on('users');
        $table->timestamps();
    });
}

php artisan migrate

$user = User::find(1);
$orders = $user->orders;