Bug #54909 [Com]: Relative weekday modifications reset time values.

Edit report at https://bugs.php.net/bug.php?id=54909&edit=1 ID: 54909 Comment by: jeff at nd4c dot com Reported by: salathe@php.net Summary: Relative weekday modifications reset time values. Status: Assigned Type: Bug Package: Date/time related Operating System: Linux PHP Version: 5.3.6 Assigned To: derick Block user comment: N Private report: N New Comment: This bug also applies to the strtotime() function. <?php $start = '2015-09-25 11:25:23'; $formats = array( '1 second', '1 minute', '1 hour', '1 day', '1 weekday', '1 weeks', '1 month', '1 year', ); echo "Start\t\t\tDateTime\t\tstrtotime\t\tformat\n"; foreach ($formats as $format): $datetime = new DateTime($start); echo $datetime->format('Y-m-d H:i:s')."\t"; $datetime->modify($format); echo date('Y-m-d H:i:s', strtotime($format, strtotime($start)))."\t"; echo $format."\n"; endforeach; ?> Outputs: Start DateTime strtotime format 2015-09-25 11:25:23 2015-09-25 11:25:24 2015-09-25 11:25:24 1 second 2015-09-25 11:25:23 2015-09-25 11:26:23 2015-09-25 11:26:23 1 minute 2015-09-25 11:25:23 2015-09-25 12:25:23 2015-09-25 12:25:23 1 hour 2015-09-25 11:25:23 2015-09-26 11:25:23 2015-09-26 11:25:23 1 day 2015-09-25 11:25:23 2015-09-28 00:00:00 2015-09-28 00:00:00 1 weekday 2015-09-25 11:25:23 2015-10-02 11:25:23 2015-10-02 11:25:23 1 weeks 2015-09-25 11:25:23 2015-10-25 11:25:23 2015-10-25 11:25:23 1 month 2015-09-25 11:25:23 2016-09-25 11:25:23 2016-09-25 11:25:23 1 year Previous Comments: ------------------------------------------------------------------------ [2011-05-23 15:55:55] salathe@php.net Description: ------------ Date modifications utilizing the "weekdays" keyword change the resulting date to have zero values for hour/minute/second units. Prior to PHP 5.3.6, the time values were unaffected. Test script: --------------- <?php $dt = new DateTime('2011-05-10 12:34:56', new DateTimeZone('UTC')); $dt->modify('10 weekdays'); echo $dt->format('r'); ?> Expected result: ---------------- Tue, 24 May 2011 12:34:56 +0000 Actual result: -------------- Tue, 24 May 2011 00:00:00 +0000 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=54909&edit=1