Split DateTime interval to single days - php

Question

I have a PHP script which receives a set of Events from a database with begin/end DateTimes, which represent working times.
Begin | End
2013-08-14 10:00:00 | 2013-08-22 09:30:00
2013-08-08 07:00:00 | 2013-08-08 15:00:00
2013-08-09 07:00:00 | 2013-08-10 07:00:00
Now I want to calculate how much has been worked each single day. For the first row I would want an output like that:
Begin | End
2013-08-14 10:00:00 | 2013-08-14 23:59:59
2013-08-15 00:00:00 | 2013-08-15 23:59:59
2013-08-16 00:00:00 | 2013-08-16 23:59:59
....
2013-08-22 00:00:00 | 2013-08-22 09:30:00
I've seen some things with DatePeriod and DateInterval, but those didn't take time into account.
Thanks for your help.

Answer 1

DatePeriod and DateInterval DO take time into account, so you can use those classes.
Your data :
$intervals = [
['begin' => '2013-08-14 10:00:00', 'end' => '2013-08-22 09:30:00'],
['begin' => '2013-08-08 07:00:00', 'end' => '2013-08-08 15:00:00'],
['begin' => '2013-08-09 07:00:00', 'end' => '2013-08-10 07:00:00'],
];
Quick function I wrote :
function explodePeriodByDays($begin, $end) {
$days = [];
$dayInterval = new DateInterval('P1D');
$begin = new DateTime($begin);
$end = new DateTime($end);
$_end = clone $end;
$_end->modify('+1 day');
foreach ((new DatePeriod($begin, $dayInterval, $_end)) as $i => $period) {
$_begin = $period;
if ($i) $_begin->setTime(0, 0, 0);
if ($_begin > $end) break;
$_end = clone $_begin;
$_end->setTime(23, 59, 59);
if ($end < $_end) $_end = $end;
$days[] = [
'begin' => $_begin,
'end' => $_end,
];
}
return $days;
}
Example of function use :
foreach ($intervals as $interval) {
echo "Day intervals from {$interval['begin']} to {$interval['end']} : \n";
foreach (explodePeriodByDays($interval['begin'], $interval['end']) as $day) {
echo "\t {$day['begin']->format('Y-m-d H:i:s')} | {$day['end']->format('Y-m-d H:i:s')}\n";
}
echo "\n";
}
Output of the example :
Day intervals from 2013-08-14 10:00:00 to 2013-08-22 09:30:00 :
2013-08-14 10:00:00 | 2013-08-14 23:59:59
2013-08-15 00:00:00 | 2013-08-15 23:59:59
2013-08-16 00:00:00 | 2013-08-16 23:59:59
2013-08-17 00:00:00 | 2013-08-17 23:59:59
2013-08-18 00:00:00 | 2013-08-18 23:59:59
2013-08-19 00:00:00 | 2013-08-19 23:59:59
2013-08-20 00:00:00 | 2013-08-20 23:59:59
2013-08-21 00:00:00 | 2013-08-21 23:59:59
2013-08-22 00:00:00 | 2013-08-22 09:30:00
Day intervals from 2013-08-08 07:00:00 to 2013-08-08 15:00:00 :
2013-08-08 07:00:00 | 2013-08-08 15:00:00
Day intervals from 2013-08-09 07:00:00 to 2013-08-10 07:00:00 :
2013-08-09 07:00:00 | 2013-08-09 23:59:59
2013-08-10 00:00:00 | 2013-08-10 07:00:00

Answer 2

If I am understanding this correctly, you want to get the difference between a begin date and an end date.
I would go about converting the time with a strtotime, subtract the timestamps, then output the date.
$begin = strtotime("2013-08-14 10:00:00");
$end = strtotime("2013-08-14 23:59:59");
$difference = ($end - $begin);
echo gmdate("H:i:s", $difference);
This would give you the time in hours, minutes, then seconds.