Problem with strtotime()

[Dawid Sza³êga]

Hi,
I do something like this:
$month = date('m', strtotime('2004-09-30 +5 months'))

This give me 03 (March), but 09 (September) + 5 months should give me 02
(February)

It's bug or I thing wrong?

--
Dawid Sza³êga

[Matthias Esken]

Re: Problem with strtotime()

Dawid Sza³êga schrieb:
[color=blue]
> $month = date('m', strtotime('2004-09-30 +5 months'))
>
> This give me 03 (March), but 09 (September) + 5 months should give me 02
> (February)[/color]

There is no such date as 2005-02-30, so you reach the next month.

Regards,
Matthias

[Dawid Szalega]

Re: Problem with strtotime()

"Matthias Esken" <muelleimer2004 nospam@usenetve rwaltung.org> wrote in
message news:cjguuv.1ao .1@usenet.esken .de...[color=blue]
> There is no such date as 2005-02-30, so you reach the next month.
> Regards,
> Matthias[/color]

I know, but it should increment only month (I thing so) and take maximum a
day of this month (?)
If I do this as SQL query to PostgreSQL:

SELECT TO_CHAR('YYYY-MM-DD', '2004-09-30' + interval '5 months')

then return '2005-02-28'

Month is Fabruary

--
Dawid Szalega

[Matthias Esken]

Re: Problem with strtotime()

Dawid Szalega wrote:
[color=blue]
> "Matthias Esken" <muelleimer2004 nospam@usenetve rwaltung.org> wrote in
> message news:cjguuv.1ao .1@usenet.esken .de...
>[color=green]
>> There is no such date as 2005-02-30, so you reach the next month.[/color]
>
> I know, but it should increment only month (I thing so) and take maximum a
> day of this month (?)
> If I do this as SQL query to PostgreSQL:
>
> SELECT TO_CHAR('YYYY-MM-DD', '2004-09-30' + interval '5 months')
>
> then return '2005-02-28'[/color]

The documentation at http://www.php.net/manual/en/function.strtotime.php
leads me to the GNU date syntax at
http://www.gnu.org/software/tar/manu..._7.html#SEC115.

There, at chapter 7.6 (Relative items in date strings), you'll find the
following example:

| The fuzz in units can cause problems with relative items. For example,
| `2003-07-31 -1 month' might evaluate to 2003-07-01, because 2003-06-31
| is an invalid date. To determine the previous month more reliably, you
| can ask for the month before the 15th of the current month.

Regards,
Matthias