Bug #75038 [Opn->Ver]: wrong result of Datetime::add

Edit report at https://bugs.php.net/bug.php?id=75038&edit=1 ID: 75038 Updated by: jhdxr@php.net Reported by: marco dot delcorto at genesi-software dot it -Summary: datetime error +Summary: wrong result of Datetime::add -Status: Open +Status: Verified Type: Bug -Package: *General Issues +Package: Date/time related Operating System: Windows 7 PHP Version: 5.6.31 Block user comment: N Private report: N New Comment: https://3v4l.org/VlkYR Previous Comments: ------------------------------------------------------------------------ [2017-08-04 17:24:04] marco dot delcorto at genesi-software dot it Description: ------------ --- From manual page: http://www.php.net/datetime.add --- using the script in the example: $date = new DateTime('2369-12-30'); $date->add(new DateInterval('P1D')); echo $date->format('Y-m-d'); the result is '2370-01-00' (wrong), instead of '2369-12-31' Same problem if we use: $dateW2 = new DateTime('2369-12-31'); echo date_format($dateW2, 'Y-m-d'); the result is '2370-01-00' (wrong), instead of '2369-12-31' Test script: --------------- $date = new DateTime('2369-12-30'); $date->add(new DateInterval('P1D')); echo $date->format('Y-m-d') . "\n"; $dateW2 = new DateTime('2369-12-31'); echo date_format($dateW2, 'Y-m-d'); ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=75038&edit=1