Array Oriented Programming - Refined Transaction

example2-refined.php

<?php
final class Payment {
    public function subscribe(PostParams $data) : Transaction {
        $transaction = Transaction::fromPost($data);
      
        $model = new TransactionModel();
        $model->create($transaction);
      
        $processor = $model->getProcessor($transaction); // a Processor object
        
        $model->process($processor, $transaction); // status is encapsulated elsewhere.

        return $transaction->sanitized();
    }
}