[thechat] determining most recent midnight
deacon b.
web at master.gen.in.us
Fri Feb 21 08:03:09 CST 2003
On 20 Feb 2003 at 19:18, gozz wrote:
> Was going to post this to the list, but solved my problem
> by converting to a string date w/o the time and then
> parsing that back into a unix epoch time ... but ... I can't
> figure out what's wrong with the way I was trying to
> mathematically figure out when the most recent midnight
> was:
> $unix_time = seconds since Jan 1, 1970;
> $seconds_in_day = 60 * 60 * 24;
> $seconds_since_most_recent_midnight = $unix_time %
> $seconds_in_day;
> $most_recent_midnight = $unix_time -
> $seconds_since_most_recent_midnight;
> Where do I go wrong there?
Works just fine.
$unix_time = time();
print "Unix time is " . $unix_time . "\n";
$seconds_in_day = 60 * 60 * 24;
print "Seconds in day = " . $seconds_in_day . "\n";
$seconds_since_most_recent_midnight =
$unix_time % $seconds_in_day;
print "Seconds since last midnight = " .
$seconds_since_most_recent_midnight . "\n";
$most_recent_midnight = $unix_time -
$seconds_since_most_recent_midnight;
print "Most recent midnight = " .
$most_recent_midnight . "\n";
($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,
$isdst) =
gmtime($most_recent_midnight);
print "Month is $mon\n";
print "Day is $mday\n";
print "Hour is $hour\n";
print "Minute is $min\n";
print "Second is $sec\n";
Unix time is 1045835951
Seconds in day = 86400
Seconds since last midnight = 50351
Most recent midnight = 1045785600
Month is 1
Day is 21
Hour is 0
Minute is 0
Second is 0
(Month is 1 because January is 0.)
deke
--
What does the Bible clearly say about dieting?
You shouldn't do it:
"Therefore I say unto you,
Take no thought for your life,
what ye shall eat, or what ye shall drink;
nor yet for your body, what ye shall put on."
- Matthew 6:25
More information about the thechat
mailing list