Bug #63391 [NEW]: [PATCH] Incorrect/inconsistent day of week prior to the year 1600

From: tcarter at noggin dot com dot au Operating system: Linux (x86_64) PHP version: 5.4.8 Package: Date/time related Bug Type: Bug Bug description:[PATCH] Incorrect/inconsistent day of week prior to the year 1600 Description: ------------ PHP timelib calculates the day of the week incorrectly for dates prior to the 1st of January 1600. Test script: --------------- <?php ini_set('date.timezone', 'UTC'); print "Date PHP OS\n"; print "---------- --- ---\n"; $dates = array('1599-12-30', '1599-12-31', '1600-01-01', '1600-01-02'); foreach ($dates as $date) { print strftime( "%Y-%m-%d %a ", strtotime($date) ) . env TZ=UTC date --date=$date +%a; } ?> Expected result: ---------------- Date PHP OS ---------- --- --- 1599-12-30 Thu Thu 1599-12-31 Fri Fri 1600-01-01 Sat Sat 1600-01-02 Sun Sun Actual result: -------------- Date PHP OS ---------- --- --- 1599-12-30 Fri Thu 1599-12-31 Sat Fri 1600-01-01 Sat Sat 1600-01-02 Sun Sun -- Edit bug report at https://bugs.php.net/bug.php?id=63391&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=63391&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=63391&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=63391&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=63391&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=63391&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=63391&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=63391&r=needscript Try newer version: https://bugs.php.net/fix.php?id=63391&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=63391&r=support Expected behavior: https://bugs.php.net/fix.php?id=63391&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=63391&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=63391&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=63391&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=63391&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=63391&r=dst IIS Stability: https://bugs.php.net/fix.php?id=63391&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=63391&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=63391&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=63391&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=63391&r=mysqlcfg