- date_diff: documentation ( source)
- date_create: documentation ( source)
- print_r: documentation ( source)
- floor: documentation ( source)
- date: documentation ( source)
- strtotime: documentation ( source)
<?php
$date1 = date_create(date('d-m-Y',strtotime('2014-06-27')));
$date2 = date_create(date('d-m-Y',strtotime('2014-07-30')));
$dat1 = strtotime('2014-06-27');
$dat2 = strtotime('2014-07-30');
echo floor(($dat2 - $dat1)/3600/24);
print_r(date_diff($date2, $date1));