- var_dump: documentation ( source)
<?php
$start = new \DateTime('01.10.2015');
$end = new \DateTime('08.10.2015');
$endYesterday = new \DateTime('07.10.2015');
$today = new \DateTome();
var_dump($today >= $start && $today <= $end);
var_dump($today >= $start && $today <= $end);