Re: [PHP] Date Issue

Thank you again Dan. Thought never crossed my mind the day being the 31st. That fixed it.

Richard L. Buskirk














On Mon, Mar 31, 2008 at 4:15 PM, <admin@buskirkgraphics.com> wrote:
> I tried that a big no go.
> Seems if I do a +1 i get 2 months from now and a -1 gives me the current
month.
>
>
>
> $month = date("F", mktime(0,0,0, date('m'), date('d'), date('Y')));
> $zomonth = date("F", mktime(0,0,0, date("m")-1, date("d"), date("Y")));
> $nmonth = date("F", mktime(0,0,0, date(m)+1, date(d), date("Y")));
>
>
> $month echo's MARCH should be Feb
> $zomonth echo's MARCH should be March
> $nmonth echo's MAY this should be April

That's because you're using today's date('d');, which is 31.

February doesn't have 31 days, nor does April, so mktime() forces
them to the following month to correct the error.

--
</Daniel P. Brown>
Forensic Services, Senior Unix Engineer
1+ (570-) 362-0283

On Mon, Mar 31, 2008 at 4:24 PM, <admin@buskirkgraphics.com> wrote:
> Thank you again Dan. Thought never crossed my mind the day being the 31st. That fixed it.

Thank Andrew Ballard, actually. He said it even before I did.

I'm getting slow in my old age! ;-P

--
</Daniel P. Brown>
Forensic Services, Senior Unix Engineer
1+ (570-) 362-0283

If you want the DAY before, you can use the -1 for the day, and get
what you want.

mktime() will "wrap" the month as needed.

But, yeah, if you try to hit a MONTH before by putting in a month
before AND the day, it will "slingshot" back and forth to get what you
don't want.

If you want the MONTH before, I *suspect* you can use date('m') for
the argument, and do NOT provide a day, and it may do what you want.

But for sure, if you use ONE (1) for the day, and then -1 for the
month it will do what you want, since every month has a ONE (1) day.

Anything 1 from 28 will work fine, actually, but using 1 is probably
clearest:

$today = mktime();
$tomorrow = mktime(1, 0, 0, date('m'), date('d') + 1);
$next_month = mktime(1, 0, 0, date('m') + 1, 1);
$last_month = mktime(1, 0, 0, date('m') - 1, 1);

I've been using these for a web calendar since nineteen-ninety-mumble,
and they've worked fine, through leap years.

You can view the source to the PDF version here:
http://uncommonground.com/events.phps

The HTML version has the exact same stuff at the top.
http://uncommonground.com/events.htm

Feel free to page through as many months/years past/present and future
to see that it works.

Since it's a 32-bit machine, it does conk out in March 2038.

I'm fairly confident our web-server will be a 64-bit machine before we
book any (real) events for 2038...

You can ignore my test events in January 2038 :-)

On Mon, March 31, 2008 3:24 pm, admin@buskirkgraphics.com wrote:
> Thank you again Dan. Thought never crossed my mind the day being the
> 31st. That fixed it.
>
> Richard L. Buskirk
>
>
>
>
>
>
>
>
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>
>
> On Mon, Mar 31, 2008 at 4:15 PM, <admin@buskirkgraphics.com> wrote:
>> I tried that a big no go.
>> Seems if I do a +1 i get 2 months from now and a -1 gives me the
>> current
> month.
>>
>>
>>
>> $month = date("F", mktime(0,0,0, date('m'), date('d'), date('Y')));
>> $zomonth = date("F", mktime(0,0,0, date("m")-1, date("d"),
>> date("Y")));
>> $nmonth = date("F", mktime(0,0,0, date(m)+1, date(d), date("Y")));
>>
>>
>> $month echo's MARCH should be Feb
>> $zomonth echo's MARCH should be March
>> $nmonth echo's MAY this should be April
>
> That's because you're using today's date('d');, which is 31.
>
> February doesn't have 31 days, nor does April, so mktime() forces
> them to the following month to correct the error.
>
> --
> </Daniel P. Brown>
> Forensic Services, Senior Unix Engineer
> 1+ (570-) 362-0283
>


--
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I want you to buy a CD from some indie artist.
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