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.


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