Bug #53397 [NEW]: Modulo is not accurate with double

From: Operating system: All PHP version: Irrelevant Package: Variables related Bug Type: Bug Bug description:Modulo is not accurate with double Description: ------------ In C++ : 1290594600000 % 86400000 = 37800000 //correct But In PHP : 1290594600000 % 86400000 = 30811200 //wrong However, in PHP : 1290594600000 - (floor(1290594600000/86400000)*86400000) = 37800000 //correct! Can modulo opertor be implemented this way when left value > PHP_INT_MAX ? See Patch in attachement Test script: --------------- echo 1290594600000 % 86400000; echo "\n"; echo 1290594600000 - (floor(1290594600000/86400000)*86400000); Expected result: ---------------- 37800000 37800000 Actual result: -------------- 30811200 37800000 -- Edit bug report at http://bugs.php.net/bug.php?id=53397&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=53397&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=53397&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=53397&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=53397&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=53397&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=53397&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=53397&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=53397&r=needscript Try newer version: http://bugs.php.net/fix.php?id=53397&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=53397&r=support Expected behavior: http://bugs.php.net/fix.php?id=53397&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=53397&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=53397&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=53397&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=53397&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=53397&r=dst IIS Stability: http://bugs.php.net/fix.php?id=53397&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=53397&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=53397&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=53397&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=53397&r=mysqlcfg