Bug #65578 [NEW]: Php Calendar does not calculate number of days correctly

From: satovey at yahoo dot com Operating system: Windows 7 PHP version: Irrelevant Package: Built-in web server Bug Type: Bug Bug description:Php Calendar does not calculate number of days correctly Description: ------------ --- From manual page: http://www.php.net/function.jewishtojd --- In using the JewishToJD function of the Calendar, there is a discrepancy in the total days of the year. The last month of the Jewish Year has 29 days and the shortest year is 353 days. Test script: --------------- <?PHP $year = "5777"; $firstDate = "1/1/$year"; $lastDate = "13/30/$year"; $count=1; calculateTotalDays($firstDate, $lastDate, $year, $count); $firstDate = "1/1/$year"; $lastDate = "13/29/$year"; $count=1; calculateTotalDays($firstDate, $lastDate, $year, $count); function calculateTotalDays($firstDate, $lastDate, $year, $count) { $count++; $displayYear = $year; list($firstMonth, $firstDay, $firstYear) = explode("/",$firstDate); list($lastMonth, $lastDay, $lastYear) = explode("/",$lastDate); if ($year < 0) { $firstYear = $firstYear + 248; $lastYear = $lastYear + 248; //echo "less than 0 => $year<br />"; } $firstDay = jewishtojd( $firstMonth, $firstDay, $firstYear ); $lastDay = jewishtojd ( $lastMonth, $lastDay, $lastYear ); $totalDaysInYear = $lastDay - $firstDay; //echo "$firstDate, $lastDate <br />"; //echo "Cycle Count -> $count | Total Days in the Year $year => "; echo "$displayYear "; echo "$totalDaysInYear"; echo "<br />"; } ?> Expected result: ---------------- It is expected that when calculating between 1/1/577 to 13/29/577 the return should be 353 days as that is the number of days in the Jewish year 5777. http://en.wikipedia.org/wiki/Hebrew_calendar#Leap_years >> Scroll up to see a list of new year dates. << This appears to occur in all versions of PHP. Actual result: -------------- Yet the provided code will output 352 days if 13,29,5777 is entered and 353 days if 13,30,5777 is entered. Note: the month of Elul which is given the number 13 is a 29 day month. The output is as follows: 5777 353 5777 352 -- Edit bug report at https://bugs.php.net/bug.php?id=65578&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=65578&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=65578&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=65578&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=65578&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=65578&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=65578&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=65578&r=needscript Try newer version: https://bugs.php.net/fix.php?id=65578&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=65578&r=support Expected behavior: https://bugs.php.net/fix.php?id=65578&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=65578&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=65578&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=65578&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=65578&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=65578&r=dst IIS Stability: https://bugs.php.net/fix.php?id=65578&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=65578&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=65578&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=65578&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=65578&r=mysqlcfg