note 106974 added to function.date

Things to be aware of when using week numbers with years. <?php echo date("YW", strtotime("2011-01-07")); // gives 201101 echo date("YW", strtotime("2011-12-31")); // gives 201152 echo date("YW", strtotime("2011-01-01")); // gives 201152 too ?> BUT <?php echo date("oW", strtotime("2011-01-07")); // gives 201101 echo date("oW", strtotime("2011-12-31")); // gives 201152 echo date("oW", strtotime("2011-01-01")); // gives 201052 (Year is different than previous example) ?> Reason: Y is year from the date o is ISO-8601 year number W is ISO-8601 week number of year Conclusion: if using 'W' for the week number use 'o' for the year. ---- Server IP: 69.147.83.197 Probable Submitter: 142.176.222.78 ---- Manual Page -- http://www.php.net/manual/en/function.date.php Edit -- https://master.php.net/note/edit/106974 Del: integrated -- https://master.php.net/note/delete/106974/integrated Del: useless -- https://master.php.net/note/delete/106974/useless Del: bad code -- https://master.php.net/note/delete/106974/bad+code Del: spam -- https://master.php.net/note/delete/106974/spam Del: non-english -- https://master.php.net/note/delete/106974/non-english Del: in docs -- https://master.php.net/note/delete/106974/in+docs Del: other reasons-- https://master.php.net/note/delete/106974 Reject -- https://master.php.net/note/reject/106974 Search -- https://master.php.net/manage/user-notes.php