<?php

//decorator pattern

class Article {

private $title;

private $time;

function __construct($title, $time){

$this->title = $title;

$this->time = $time;

}

function getTitle(){

return $this->title;

}

function getTime(){

return $this->time;

}

function displayTitle(){

$title = $this->getTitle();

$time = date('y/m/d h:j:s', $this->getTime());

echo "{$title} was published on {$time}";

}

}

class ArticleTitleDecorator {

private $article;

function __construct(Article $article){

$this->article = $article;

}

function displayTitle(){

$title = $this->article->getTitle();

$time = $this->timeAgo($this->article->getTime());

echo "{$title} was published on {$time}";

}

private function timeAgo( $time ) {

//source: https://www.geeksforgeeks.org/how-to-convert-timestamp-to-time-ago-in-php/

$diff = time() - $time;

if( $diff < 1 ) {

return 'less than 1 second ago';

}

$timeRules = array (

12 * 30 * 24 * 60 * 60 => 'year',

30 * 24 * 60 * 60 => 'month',

24 * 60 * 60 => 'day',

60 * 60 => 'hour',

60 => 'minute',

1 => 'second'

);

foreach( $timeRules as $secs => $str ) {

$div = $diff / $secs;

if( $div >= 1 ) {

$t = round( $div );

return $t . ' ' . $str .

( $t > 1 ? 's' : '' ) . ' ago';

}

}

}

}

$at = new Article('Article one', time()-450000);

$articleDeco = new ArticleTitleDecorator($at);

$articleDeco->displayTitle();