A simple presenter example based on CakePHP 2 code

example.php

<?php

class Dummy extends Model {
    public function price() {
        return (float)1,234.56; // db stored value
    }
}

class DummyPresenter {

    protected $model;

    function __construct(Dummy $modelInstance) {
        $this->model = $modelInstance;
    }

    function price() {
        return money_format('%i', $this->model->price()); // the value as it should be shown 
    }
}

$model = [ find it ];
$presenter = new DummyPresenter($model);

echo $presenter->price(); // USD 1,234.56