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 <arno@xxxxxxxxxxxxxx> > 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
