php-general Digest 9 Jan 2013 10:22:15 -0000 Issue 8092
Topics (messages 320055 through 320058):
Re: Some date() oddities
320055 by: Daniel Brown
320056 by: Sebastian Krebs
320057 by: Geoff Shang
320058 by: Arno Kuhl
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--- Begin Message ---
On Tue, Jan 8, 2013 at 3:43 PM, Arno Kuhl <a...@dotcontent.net> wrote:
> I've bumped into an odd result with the date() function that I can't make
> sense of.
>
> Starting with a unix timestamp for 31 December 2012 13:12:12 (which is
> 1356952332) I calculate a week number:
>
> $ux_date = 1356952332;
>
> $weeknumber = date("W", $ux_date); // returns 01 instead of 52
Because, technically, 31 December was the second date of the
*fifty-third* week of 2012. However, because the majority of the week
falls in 2013, it's rounded-in with that.
--
</Daniel P. Brown>
Network Infrastructure Manager
http://www.php.net/
--- End Message ---
--- Begin Message ---
Hi,
Workaround for what? The 31st of december is the first week of the
ISO8601-year 2013. That has nothing to do with PHP, date(), or any warnings
somebody left in the comments. Thats the way ISO8601 is defined:
http://en.wikipedia.org/wiki/ISO_8601#Week_dates
Regards,
Sebastian
2013/1/8 Arno Kuhl <a...@dotcontent.net>
> I've bumped into an odd result with the date() function that I can't make
> sense of.
>
>
>
> Starting with a unix timestamp for 31 December 2012 13:12:12 (which is
> 1356952332) I calculate a week number:
>
> $ux_date = 1356952332;
>
> $weeknumber = date("W", $ux_date); // returns 01 instead of 52
>
>
>
> I found some warnings regarding ISO8601 for this in the user notes for the
> date() function in the PHP manual but couldn't see how this is managed in
> code, does anyone know of a workaround for this?
>
>
>
> Cheers
>
> Arno
>
>
>
>
>
>
--
github.com/KingCrunch
--- End Message ---
--- Begin Message ---
On Tue, 8 Jan 2013, Arno Kuhl wrote:
Starting with a unix timestamp for 31 December 2012 13:12:12 (which is
1356952332) I calculate a week number:
$ux_date = 1356952332;
$weeknumber = date("W", $ux_date); // returns 01 instead of 52
I'm not that familiar with date, I tend to use strftime myself (no idea
why there's both). Sounds like date's W is equivalent to strftime's %V
which does indeed return "01" for this date as there's at least 4 days of
the new year in that particular week.
Both %U and %W seem to return what you want, using strftime. I'd guess
that date would also have flags for these.
Cheers,
Geoff.
--- End Message ---
--- Begin Message ---
On Tue, 8 Jan 2013, Arno Kuhl wrote:
> Starting with a unix timestamp for 31 December 2012 13:12:12 (which is
> 1356952332) I calculate a week number:
>
> $ux_date = 1356952332;
>
> $weeknumber = date("W", $ux_date); // returns 01 instead of 52
I'm not that familiar with date, I tend to use strftime myself (no idea why
there's both). Sounds like date's W is equivalent to strftime's %V which
does indeed return "01" for this date as there's at least 4 days of the new
year in that particular week.
Both %U and %W seem to return what you want, using strftime. I'd guess that
date would also have flags for these.
Cheers,
Geoff.
--
Thanks Geoff, that's what I was looking for.
Cheers
Arno
--- End Message ---
