php通过一天中的多个条目获取从开始时间到结束时间的总工作时间

Question

Im trying to build a clock in clock out system. When trying to get a report of hours worked by a user for a given day i need to total the number of hours worked. I have a startTime (timestamp) and endTime (timestamp) but i can have multiple entries for a user on any given day whre they clock in go to break clock out then clcok in after and out for lunch and so on.

 array
  (
        [theUser] => Bob Johnson
        [timeId] => 9
        [user_id] => 1
        [weekNo] => 34
        [clockYear] => 2016
        [entryDate] => 2016-08-21
        [startTime] => 2016-08-21 21:57:01
        [endTime] => 2016-08-21 22:45:15
        [updated_at] => 2016-08-21 22:45:15
        [totTime] => 00:48:14
    ) 

    [9] => Array
    (
        [theUser] => Bob Johnson
        [timeId] => 16
        [user_id] => 1
        [weekNo] => 34
        [clockYear] => 2016
        [entryDate] => 2016-08-24
        [startTime] => 2016-08-24 01:00:00
        [endTime] => 2016-08-24 05:15:00
        [updated_at] => 
        [totTime] => 04:15:00
    )
    (
        [theUser] => Bob Johson
        [timeId] => 15
        [user_id] => 1
        [weekNo] => 34
        [clockYear] => 2016
        [entryDate] => 2016-08-24
        [startTime] => 2016-08-24 01:00:00
        [endTime] => 2016-08-24 05:15:00
        [updated_at] => 
        [totTime] => 04:15:00
    )

    (
        [theUser] => Bob Johnson
        [timeId] => 18
        [user_id] => 1
        [weekNo] => 34
        [clockYear] => 2016
        [entryDate] => 2016-08-24
        [startTime] => 2016-08-24 09:59:00
        [endTime] => 2016-08-24 10:45:00
        [updated_at] => 2016-08-24 10:19:31
        [totTime] => 00:46:00
    )

I need to make new array with the total hours worked summed up I would like to achieve something like this

         (
                [theUser] = Bob Johnson
                [weekNo] = 34
                [Year] = 2016
                [entryDate] = 2016-08-24
                [totalHoursWorked] = 09:16:00
                [overTime] = 01:16:00
            )

Can anyone help with this please if tried taking

          $startTime = strtotime($val['startTime']);
          $endTime = strtotime($val['endTime']);
          $tot += $endTime - $startTime;

          echo date('H:i:s', $tot)

in a foreach loop but i always get wrong values

Answer 1

The problem is with your last line: echo date('H:i:s', $tot)

You should use gmdate instead:

echo gmdate('H:i:s', $tot);

Or format it with a simple math code:

$hours = floor($init / 3600);
$minutes = floor(($init / 60) % 60);
$seconds = $init % 60;

echo "$hours:$minutes:$seconds";

Answer 2

使用Carbon等库将更方便您进行计算和格式化