Home/ Questions/Q 8097889
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-05T21:54:15+00:00

I’m using strtotime($my_time); to create timestamps that I use in php math. The variable

  • 0

I’m using strtotime($my_time); to create timestamps that I use in php math.

The variable $my_time is in HH:mm:ss 24h format pulled from the database.

I’m setting the time but I don’t know what date is being produced. For this reason I’m trying to set a fixed date. I tried the followng but I’m getting wrong results in my calculations.

strtotime('2007-12-21', $my_time);

strtotime( '+1 day', strtotime('2007-12-21', $my_time); //should produce 2007-12-21 00:00:00 ?

Please help me understand how to set a fixed date in strtotime() and dynamic time?

note: the DateTime class isn’t an option in the code I’m using.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    You should concatenate the strings into one argument, not providing two arguments.

    strtotime('1970-01-01 ' . $my_time);

    I’ve also switched to 1970-01-01 as the date because that’s when UNIX timestamps begins, which gives you seconds only to work with. It may be easier to troubleshoot that way because you can see at a glance if one number is bigger than another, you can also easily spot failures such as >86400 and so on.

    • 0