How can subtract seconds from a time on seconds?

Question

From a time like:

$time_on_seconds = 18000;

It is equal to 5 hours.

Now for subtract seconds Im using this code:

$new_time_on_seconds = date("H:i", strtotime($time_on_seconds) - 60);

It return me 23:59 when this should return me 4:59

Full answer can be found here - https://stackoverflow.com/questions/17717911/how-to-subtract-minutes — AlwaysConfused, May 24 '20 at 10:19
Does this answer your question? [How to Subtract Minutes](https://stackoverflow.com/questions/17717911/how-to-subtract-minutes) — Thomas Landauer, May 24 '20 at 10:24
I'd say that does not answer the question since it's completely different. But sure, it gives some hints at best. — Andreas, May 24 '20 at 10:26

score 0 · Accepted Answer · answered May 24 '20 at 10:17

Just remove strtotime.
Strtotime does what the name says it takes a str (string) and makes it time (seconds) so using that on a already number won't work.

$time_on_seconds = 18000;
echo $new_time_on_seconds = date("H:i", $time_on_seconds - 60);

But keep in mind date() is timezone aware so you may end up with a wrong result depending on your timezone.
Set the timezone to UTC and you should get the correct result.

How can subtract seconds from a time on seconds?

1 Answers1