#47723 [NEW]: strtotime(JD) provides wrong timestamp for some JD

From: berthier at imcce dot fr Operating system: ArchLinux, CentOS (x86_64) PHP version: 5.2.9 PHP Bug Type: *Calendar problems Bug description: strtotime(JD) provides wrong timestamp for some JD Description: ------------ For the first 365 days of each millennium, the function strtotime() applied on a Julian Day provides a Unix timestamp whereas it should not. Moreover, the Unix timestamp is wrong and always ranges between 110638652400 and 110670188400. This bug exists for php 5.2.9 on ArchLinux 2009-02 kernel 2.6.28 x86_64 and also for php 5.2.6 on CentOS 5.2 kernel 2.6.18 x86_64. It does not exist for php 5.2.6 on OpenSuse 11.1 kernel 2.6.27 i686. Reproduce code: --------------- <?php $epoch_0 = 2400000.5476; for ($i=0; $i<=100000; $i++) { $epoch = $epoch_0 + $i; if (($timestamp = strtotime($epoch)) === FALSE) { echo $epoch." == not a timestamp!\n"; } else { echo $epoch." == timestamp = ".$timestamp." ; JD = ".unixtojd($timestamp)."\n"; } } ?> Expected result: ---------------- 2400000.5476 == not a timestamp! 2400001.5476 == not a timestamp! 2400002.5476 == not a timestamp! ... 2400365.5476 == not a timestamp! 2400366.5476 == not a timestamp! 2400367.5476 == not a timestamp! Actual result: -------------- 2400000.5476 == not a timestamp! 2400001.5476 == timestamp = 110638652400 ; JD = 3721128 2400002.5476 == timestamp = 110638738800 ; JD = 3721129 ... 2400365.5476 == timestamp = 110670102000 ; JD = 3721492 2400366.5476 == timestamp = 110670188400 ; JD = 3721493 2400367.5476 == not a timestamp! -- Edit bug report at http://bugs.php.net/?id=47723&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=47723&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=47723&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=47723&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=47723&r=fixedcvs Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=47723&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=47723&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=47723&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=47723&r=needscript Try newer version: http://bugs.php.net/fix.php?id=47723&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=47723&r=support Expected behavior: http://bugs.php.net/fix.php?id=47723&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=47723&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=47723&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=47723&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=47723&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=47723&r=dst IIS Stability: http://bugs.php.net/fix.php?id=47723&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=47723&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=47723&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=47723&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=47723&r=mysqlcfg