Description:
------------
DateInterval fail to calculate number of days and hours

http://3v4l.org/ab0Hm#v5424

Test script:
---------------
<?php

$debut = mktime(0, 0, 0, 10, 27, 2013);
$fin = mktime(23, 59, 59, 11, 10, 2013);

$d1 = new DateTime('now',new DateTimeZone('Europe/Paris'));
$d2 = new DateTime('now',new DateTimeZone('Europe/Paris'));
$d1->setTimestamp($debut);
$d2->setTimestamp($fin);
$diff = $d1->diff($d2);

print_r($diff);

Expected result:
----------------
DateInterval Object
(
    [y] => 0
    [m] => 0
    [d] => 14
    [h] => 23
    [i] => 59
    [s] => 59
    [weekday] => 0
    [weekday_behavior] => 0
    [first_last_day_of] => 0
    [invert] => 0
    [days] => 14
    [special_type] => 0
    [special_amount] => 0
    [have_weekday_relative] => 0
    [have_special_relative] => 0
)

Actual result:
--------------
DateInterval Object
(
    [y] => 0
    [m] => 0
    [d] => 15
    [h] => -1
    [i] => 59
    [s] => 59
    [weekday] => 0
    [weekday_behavior] => 0
    [first_last_day_of] => 0
    [invert] => 0
    [days] => 14
    [special_type] => 0
    [special_amount] => 0
    [have_weekday_relative] => 0
    [have_special_relative] => 0
)