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 MySQLConnection
{
   /**
   * db connection
   */
   public function connect()
   {
      var_dump('MYSQL Connection');
   }

nahidulhasan

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

class OrdersReport
{
	protected $repo;
	protected $formatter;

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

nahidulhasan

<?php
namespace Demo;
use DB;

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

nahidulhasan

<?php
interface WorkAbleInterface
{
    public  function work();
}

interface SleepAbleInterface
{
    public  function  sleep();
}

nahidulhasan

<?php
interface workerInterface
{
    public  function work();
    public  function  sleep();
}

class HumanWorker implements workerInterface
{
    public  function work()

nahidulhasan

<?php
interface LessonRepositoryInterface
{
    /**
     * Fetch all records.
     *
     * @return array
     */
    public function getAll();
}

nahidulhasan

<?php
interface AreaInterface
{
    public  function calculateArea();
}

class Rectangle implements AreaInterface
{
    public $width;
    public $height;

nahidulhasan

<?php
class Rectangle
{
    public $width;
    public $height;
    public function __construct($width, $height)
    {
        $this->width = $width;
        $this->height = $height;
    }

nahidulhasan

<?php
interface ConnectionInterface
{
    public function connect();
}

class DbConnection implements ConnectionInterface
{

    /**