Edit report at http://bugs.php.net/bug.php?id=48187&edit=1
ID: 48187 Comment by: jasonjoo dot god at gmail dot com Reported by: wavetrex at gmail dot com Summary: DateTime::diff() corrupting microtime() result Status: Open Type: Bug Package: Date/time related Operating System: Windows 2003 Server PHP Version: 5.3.0RC2 Block user comment: N New Comment: my test script below: <?php date_default_timezone_set("Asia/Chongqing"); echo microtime(true); echo "\n"; $now=new DateTime(); $now->diff(new DateTime()); echo microtime(true); ?> and my os is win32/xp I found this isue can be reproduced under apache in handler mode, but it is no isue in command line mode(eg. php test.php). for example, I got its output like this: 1281415176.9756 1281402595.446 and the wrong one only change the part following dot my php version is 5.3.3 Previous Comments: ------------------------------------------------------------------------ [2010-07-18 00:47:15] k.schroe...@php.net Automatic comment from SVN on behalf of k.schroeder Revision: http://svn.php.net/viewvc/?view=revision&revision=301359 Log: Test for #48187 ------------------------------------------------------------------------ [2009-05-10 01:41:59] wavetrex at gmail dot com float(1241919300.3593) float(1241709350.3736) int(1241919300) int(1241919300) string(25) "2009-05-10T04:35:00+03:00" string(25) "2009-05-10T04:35:00+03:00" ( http://wt.ath.cx/jani.php ) Note: 1241709350 -> this value seems to stay almost unchanged over time (look at my first submission: string(21) "0.25882200 1241709345" ) When I reported the difference was ~50000 seconds, now it's over 200.000 ------------------------------------------------------------------------ [2009-05-09 20:59:00] j...@php.net What is the output of the script I provided? ------------------------------------------------------------------------ [2009-05-09 06:58:21] wavetrex at gmail dot com @jani: I'm using microtime() multiple times to determine how long some complex parts of the script take to execute, when I noticed weird differences. Also, while the second microtime() call after diff() is wrong, the third seems to be ok, just like calling the function resets some internal variable that was broken during execution of diff() I prepared a script on my server: http://wt.ath.cx/diff.php The code for this script is here: http://wt.ath.cx/diff.txt Server configuration: http://wt.ath.cx/phpinfo.php Time difference between the two calls: Expected result: 3.814697265625E-5 (a few microseconds) Actual result: -142455.45035195 (??) Your script: http://wt.ath.cx/jani.php ... also has the error. If this probably occurs on my server, I'm thinking... it might be timezone related ? I'm sure yours and mine are different. (check my phpinfo.php to see date/time settings) P.S. While investigating, I noticed that in some rare cases it doesn't happen, and after Ctrl-R it gives the erroned value again. Try reloading the page a few times in case 1st time it shows the correct values. I'll keep experimenting with the new 5.3.0 time functions and see if some other errors appear. ------------------------------------------------------------------------ [2009-05-09 04:15:40] j...@php.net Try this script instead: (I can't reproduce this..) <?php // two arbitrary dates $date1=new DateTime("2005-07-23"); $date2=new DateTime("2006-02-14"); $begin_u = microtime(true); $begin_t = time(); $begin_a = date(DATE_ATOM); var_dump($date1->diff($date2)); var_dump($begin_u, microtime(true)); var_dump($begin_t, time()); var_dump($begin_a, date(DATE_ATOM)); ?> ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/bug.php?id=48187 -- Edit this bug report at http://bugs.php.net/bug.php?id=48187&edit=1