PHP WP Yesterday

YESTERDAY YANG WORK
date_i18n
<?php $yesterday = date_i18n("Ymd", mktime(0, 0, 0, date_i18n("m") , date_i18n("d")-1,date_i18n("Y"))); echo $yesterday; ?>

YESTERDAY
<?php echo date("Ymd", strtotime( '-1 days' )); ?>
<?php $datetime = new DateTime('yesterday'); echo $datetime->format('Ymd'); ?>

TOMORROW
<?php $datetime = new DateTime('tomorrow'); echo $datetime->format('Ymd'); ?>