From: Operating system: Linux PHP version: 5.3.10 Package: Date/time related Bug Type: Bug Bug description:Wrong Day of Week
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 bug report at https://bugs.php.net/bug.php?id=61599&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=61599&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=61599&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=61599&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=61599&r=fixed Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=61599&r=needdocs Fixed in release: https://bugs.php.net/fix.php?id=61599&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=61599&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=61599&r=needscript Try newer version: https://bugs.php.net/fix.php?id=61599&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=61599&r=support Expected behavior: https://bugs.php.net/fix.php?id=61599&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=61599&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=61599&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=61599&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=61599&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=61599&r=dst IIS Stability: https://bugs.php.net/fix.php?id=61599&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=61599&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=61599&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=61599&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=61599&r=mysqlcfg
