- date_diff: documentation ( source)
- var_dump: documentation ( source)
- date_create: documentation ( source)
- date_default_timezone_set: documentation ( source)
<?php
date_default_timezone_set('UTC');
$dateStart = date_create('2014-07-29');
$dateToday = date_create('2014-07-30');
$startDiff = date_diff( $dateToday , $dateStart);
var_dump( $startDiff->days );
var_dump( $startDiff->format('%h') );