<?php
class Article extends Entity
{
    // empty
    // but will auto populated by Table object.
    // there 2 options available to know what attributes that we need to $this->set()
    // 1. Go to the table at database, 2. Go to view template that consumes entity object attributes
}

// It's better , because we know what attributes to set IF we change data source
class Article extends Entity
{
    private $title;
    private $viewer;
    private $date;
    private $content;

    public function setTitle($title)
    {
        $this->title = $title;
    }

    public function setViewer($viewer)
    {
        $this->viewer = $viewer;
    }

    public function setDate($date)
    {
        $this->date = $date;
    }

    public function setContent($content)
    {
        $this->content = $content;
    }
}

$from_redis = $redis->get('somekey');
$data = json_decode($from_redis, true);

$article = new Article();
$article->setTitle($data['title_from_redis']);
$article->setViewer($data['viewer_from_redis']);