Posted by Roman on 03/25/06 12:31

Noozer wrote:
> I've got a PHP question (it's my first PHP script)... Hopefully there's a
> quick answer.
>
> Why does the following show a 17 hour difference when the "Some Stuff" code
> actually takes only 42 seconds?
>
> For output I get:
> Elapsed time was 17:00.42.
>
>
> <?php
>
> $start_time = mktime();
>
> //42 seconds of some stuff happening here
>
> $finish_time = mktime();
>
> echo "Elapsed time was ".(date("G:i.s",$finish_time-$start_time)).".";
>
> ?>

In my opinion the problem is that date() function returns local time. So
if you supply with integer number 42, that would translate into January
1 1970 00:00:42 GMT, but your timezone is GMT+17 or GMT-7 hours, so
that's where it comes from. Try gmdate().

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