Bug #68506 [NEW]: General DateTime improvments needed for microseconds to become useful

From: mfaust at usinternet dot com Operating system: PHP version: master-Git-2014-11-26 (Git) Package: Date/time related Bug Type: Bug Bug description:General DateTime improvments needed for microseconds to become useful Description: ------------ There are several major issues with the current implementation of DateTime in regards to microseconds that make it generally useless as-is. Microseconds are critical for many reasons, including high resolution logging in todays environments. Here are a few additional observations made with microseconds in its current state: - They are not used for object comparisons. Internal comparisons should take microseconds into account. This is seen as a bug. - There is no way to change microseconds after object initialization. setTime should have an optional 4th parameter added, and modify() should also allow changing/setting of microseconds. - They are not available in DateTimeInterval objects created from a call to diff() or created directly. - Various date functions that use timestamps should be able to use the microseconds portion of the result from microtime(TRUE), for example date('Y-m-d H:i:s.u', microtime(TRUE)) Test script: --------------- //Proper date comparison $a = new DateTime('2014-11-01 00:00:00.000001'); $b = new DateTime('2014-11-01 00:00:00.000002'); if($a == $b){ //should not happen echo 'SAME'; }elseif($a < $b){ //should happen echo 'DIFFERENT' } //Ability to change microseconds $a->setTime(11, 30, 00, 123456); //Diff output $diff = $a->diff($b); echo $diff->u; -- Edit bug report at https://bugs.php.net/bug.php?id=68506&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=68506&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=68506&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=68506&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=68506&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=68506&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=68506&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=68506&r=needscript Try newer version: https://bugs.php.net/fix.php?id=68506&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=68506&r=support Expected behavior: https://bugs.php.net/fix.php?id=68506&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=68506&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=68506&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=68506&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=68506&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=68506&r=dst IIS Stability: https://bugs.php.net/fix.php?id=68506&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=68506&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=68506&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=68506&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=68506&r=mysqlcfg