Edit report at https://bugs.php.net/bug.php?id=61599&edit=1
ID: 61599 Comment by: zhanglijiu at gmail dot com Reported by: grom358_spamkill at yahoo dot com dot au Summary: Wrong Day of Week Status: Open Type: Bug Package: Date/time related Operating System: Linux PHP Version: 5.3.10 Block user comment: N Private report: N New Comment: According to your code,my results is "Saturday, 15th October 1582 Saturday, 31st December 1599", there is nothing wrong. My system is Mac 10.6.8 PHP 5.3.1 Previous Comments: ------------------------------------------------------------------------ [2012-04-02 06:08:04] grom358_spamkill at yahoo dot com dot au Description: ------------ The 15th October 1582 is a Friday (see http://en.wikipedia.org/wiki/Gregorian_calendar). Testing with Python and Java confirms this as well. Also checked the Gnome calendar. The Proleptic Gregorian Calendar (see http://en.wikipedia.org/wiki/Proleptic_Gregorian_calendar) just extends the Gregorian calendar backwards. I'm assuming PHP is using proleptic calendar, which would make 4th october 1582 a monday. But again DateTime gets it wrong. I made a script to find the breaking point, and it occurs at 31st December 1599. It returns it as a Saturday when in fact its a Friday. Test script: --------------- <?php $date = new DateTime(); $date->setDate(1582, 10, 15); echo $date->format('l, jS F Y') . PHP_EOL; $date->setDate(1599, 12, 31); echo $date->format('l, jS F Y') . PHP_EOL; Expected result: ---------------- Friday, 15th October 1582 Friday, 31st December 1599 Actual result: -------------- Saturday, 15th October 1582 Saturday, 31st December 1599 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=61599&edit=1
