<?php


class TimeTravel
{
    private $start;
    private $end;

    public function __construct($start, $end)
    {
        $this->start = new DateTime($start);
        $this->end = new DateTime($end);
    }

    public function getTravelInfo()
        {
            return $this->start->diff($this->end)->format('Il y a %Y années, %M mois, %D jours, %h heures, %i minutes et %s secondes entre les deux dates');
        }

    public function findDate($interval)
    {
        date_sub($this->start, date_interval_create_from_date_string($interval));
        return date_format($this->start, 'd-m-Y');
    }
    public function backToFutureStepByStep($step)
    {
        $intervalle =date_interval_create_from_date_string($step);
        $steps = new DatePeriod($this->start, $intervalle ,$this->end);

        foreach($steps as $date) {
            echo $date->format("M d Y A H:i") . "<br>";
        }

    }
    }

?>