date twig extension (today, yesterday, tomorrow)

StringDateExtension.php

<?php
/*
* This file is part of the INB application.
*
* (c) Sergey Gerdel <skif16@ukr.net>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

namespace INB\CoreBundle\Twig;

use Twig_Extension;
use Twig_Filter_Method;

class StringDateExtension extends Twig_Extension
{

    public function getFilters()
    {
        return array(
            'string_date' => new Twig_Filter_Method($this, 'processFilter'),
        );
    }

    public function processFilter(\DateTime $date, $format = 'd-m-Y')
    {
        $today = mktime(0, 0, 0, date('m'), date('d'), date('Y'));
        $today_end = mktime(23, 59, 59, date('m'), date('d'), date('Y'));
        $u_date = $date->format('U');
        $nextday = $today_end + 1;
        if($u_date >= $nextday && $nextday < $nextday + (3600*24)){
            return 'tomorrow';
        }
        elseif ($u_date >= $today && $u_date < $today_end){
            return 'today';
        }
        elseif($u_date < $today && $u_date > $today - (3600*24)){
            return 'yesterday';
        }
        else{
            return $date->format($format);
        }
    }

    public function getName()
    {
        return 'string_date_extension';
    }
}