DateInterval - Difference between two times

Question

I have 2 times (DateInterval - php) and I would like to get the difference between them (something like "diff()" function for DateTime).

My situation:

$task->estimate->format('%H:%I');          // HOURS:MINUTES / DateInterval 
$task->total_time->format('%H:%I');        // HOURS:MINUTES / DateInterval 
$task->total_time->diff($task->estimate);  // Not workin, only for DateTime
// difference between them?

It would be great without counting it in second, there must be easy way to do this.

Possible duplicate of [PHP difference between two times](http://stackoverflow.com/questions/34486600/php-difference-between-two-times) — niceman, Mar 19 '17 at 15:46
@niceman Nope, date_diff doesn't work (date_diff() expects parameter 1 to be DateTimeInterface, object given) and date_create() doesnt works too (not accepting normal nor formated dates of type DateInterval) — Jax-p, Mar 19 '17 at 15:50
@JaredFarrish how to get difference between two values of type "DataInterval" (NOT DateTime) — Jax-p, Mar 19 '17 at 15:51
If you can make your estimate and total time into total number of minutes (or seconds...), you can subtract the two total number of seconds and then turn that into a number of minutes and/or hours display. — Jared Farrish, Mar 19 '17 at 16:05
Possible duplicate of [How to get time difference in minutes in PHP](https://stackoverflow.com/questions/365191/how-to-get-time-difference-in-minutes-in-php) — localheinz, Apr 30 '18 at 13:23

score 2 · Accepted Answer · answered Mar 19 '17 at 16:03

You can calculate diif of (any time + interval1) and (the same time + interval2)

$estimate = new DateInterval('PT6H8M');
$total_time  = new DateInterval('PT5H7M');
$time = new DateTime('midnight');
$time->add($total_time);
$time1 = new DateTime('midnight');
$diff = $time1->add($estimate)->diff($time);
var_dump($diff); // object(DateInterval) ... ["h"]=> int(1) ["i"]=> int(1)  ...

DateInterval - Difference between two times

1 Answers1