nahidulhasan

<?php

/*
 * Defines a one-to-many dependency between objects so that
 *  when one object changes state, all its dependents are notified and updated automatically.
 */

interface Subject{
    public function attach($observable);
    public function detach($index);

nahidulhasan

<?php

class LogToDatabase 
{
    public function execute($message)
    {
        var_dump('log the message to a database :'.$message);
    }
}

nahidulhasan

<?php

class Tea 
{
    public function addTea()
    {
        var_dump('Add proper amount of tea');
        return $this;
    }

nahidulhasan

<?php

class Coffee 
{
    public function addCoffee()
    {
        var_dump('Add proper amount of coffee');
        return $this;
    }

nahidulhasan

<?php

interface Logger
{
    public function execute();
}

nahidulhasan

<?php

interface Logger 
{
    public function execute($message);
}

class LogToDatabase implements Logger 
{
    public function execute($message){

nahidulhasan

<?php

abstract class Template
{
    public function make()
    {
        return $this
            ->addHotWater()
            ->addSugar()
            ->addPrimaryToppings()

nahidulhasan

<?php

abstract class AbstractClass
{
    // Force Extending class to define this method
    abstract protected function getValue();
    
    public function printOut() 
    {
        print $this->getValue() . "\n";

nahidulhasan

<?php
namespace Demo;
use DB;

class OrdersReport
{
    public function getOrdersInfo($startDate, $endDate)
    {
        $orders = $this->queryDBForOrders($startDate, $endDate);
        

nahidulhasan

<?php
namespace Report;
use Report\Repositories\OrdersRepository;

class OrdersReport
{
	protected $repo;
	protected $formatter;

	public function __construct(OrdersRepository $repo, OrdersOutPutInterface $formatter)