Returns a new date object modified
<pre> {{ post.published_at|date_modify("-1day")|date("m/d/Y") }} </pre>
Twig_Environment $env A Twig_Environment instance:
DateTime|string $date A date:
string $modifier A modifier string:
DateTime A new date object
function twig_date_modify_filter(Twig_Environment $env, $date, $modifier) {
$date = twig_date_converter($env, $date, false);
$date
->modify($modifier);
return $date;
}