Exemplo Strategy design patterns

strategy.php

<?php
interface OutputInterface
{
    public function load($arrayOfData);
}

class SerializedArrayOutput implements OutputInterface
{
    public function load($arrayOfData)
    {
        return serialize($arrayOfData);
    }
}

class JsonStringOutput implements OutputInterface
{
    public function load($arrayOfData)
    {
        return json_encode($arrayOfData);
    }
}

class ArrayOutput implements OutputInterface
{
    public function load($arrayOfData)
    {
        return $arrayOfData;
    }
}


class Client
{
    private $output;

    public $name;

    public function setOutput(OutputInterface $outputType)
    {
        $this->output = $outputType;
    }

    public function loadOutput()
    {
        return $this->output->load(get_object_vars($this));
    }
}

$client = new Client();
$client->name = "Ederlo Rodrigo";

// Quer um array?
$client->setOutput(new ArrayOutput());
$data = $client->loadOutput();
var_dump($data);

// Quer um JSON?
$client->setOutput(new JsonStringOutput());
$data = $client->loadOutput();
var_dump($data);

// Quer um Serialize?
$client->setOutput(new SerializedArrayOutput());
$data = $client->loadOutput();
var_dump($data);