- var_dump: documentation ( source)
<?php
$today = new DateTime('noon first day of this month');
$clone = clone $today;
$clone->modify('+1 day');
$currentGenerateDay = new DateTime('noon first day of this month');
echo $clone->format('Y-m-d H:i:s');//.' '.$currentGenerateDay->format('Y-m-d H:i:s');
var_dump($clone == $currentGenerateDay);