note 56156 added to function.date

The format parameter 'W' which return the ISO Week, do not follow the ISO standard (ISO 8601), since it return the first 9 weeks without a leading zero. Use this for returning current week with leading zeros $ISOweek = substr('0' . date('W') , -2); Here's an example returning the ISO year if you're running an earlier versiuon of PHP than 5.1 (were tou can use the parameter 'o'): (I'm quite new to PHP, so the code can be a bit 'bad') <?php //if OK // $datetext = "28 December 2003"; //2003-W52-7 // $datetext = "29 December 2003"; //2004-W01-1 //elseif OK $datetext = "3 January 1999"; //1998-W53-7 // $datetext = "4 January 1999"; //1999-W01-1 // $ISOweek = substr('0' . date('W',strtotime($datetext)) , -2); if ((date('d',strtotime($datetext))>=29) && (date('m',strtotime($datetext))==12) && (date('W',strtotime($datetext))==1)) { $ISOyearweek = date('Y',strtotime($datetext)) + 1 . '-W' . $ISOweek; } elseif ((date('d',strtotime($datetext))<=3) && (date('m',strtotime($datetext))==1) && (date('W',strtotime($datetext))==53)) { $ISOyearweek = date('Y',strtotime($datetext)) - 1 . '-W' . $ISOweek; } else { $ISOyearweek = date('Y',strtotime($datetext)) . ' -W' . $ISOweek; } echo $datetext,"<BR>"; echo "Date: " . date('Y-m-d',strtotime($datetext)),"<BR>"; echo "Week: " . $ISOyearweek,"<BR>"; ?> More on converting in accordance with ISO 8601, see http://www.pvv.org/~nsaa/ISO8601.html ---- Manual Page -- http://www.php.net/manual/en/function.date.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+56156 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+56156&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+56156&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+56156&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+56156&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+56156&report=yes&reason=non-english Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+56156&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+56156&report=yes Search -- http://master.php.net/manage/user-notes.php