Bug->Doc #76620 [Nab->ReO]: DatePeriod::getEndDate() drops reference to the end date DateTime object

Edit report at https://bugs.php.net/bug.php?id=76620&edit=1 ID: 76620 Updated by: cmb@php.net Reported by: jerry at jmweb dot net Summary: DatePeriod::getEndDate() drops reference to the end date DateTime object -Status: Not a bug +Status: Re-Opened -Type: Bug +Type: Documentation Problem Package: Date/time related Operating System: Win7 64bit PHP Version: 7.2.7 -Assigned To: cmb +Assigned To: Block user comment: N Private report: N New Comment: Firstly, to confirm your assumption, use var_dump( $period->getEndDate() === $period->getEndDate() ); ::add() returns a new DateTime object anyway. > Can you show me where this is stated in the documentation? It is not explicitly documented. > And if it is not modifiable, whats the purpose of instantiating > with DateTimeImmutable? DateTime as well as DateTimeImmutable are supported for convenience, and for historic reasons. Previous Comments: ------------------------------------------------------------------------ [2018-07-13 14:49:10] jerry at jmweb dot net First and foremost, thank you for working on the PHP project. Can you show me where this is stated in the documentation? And if it is not modifiable, whats the purpose of instantiating with DateTimeImmutable? ------------------------------------------------------------------------ [2018-07-13 14:37:12] cmb@php.net As said above. ------------------------------------------------------------------------ [2018-07-13 14:36:45] cmb@php.net Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php The end date is not supposed to be modifiable. ------------------------------------------------------------------------ [2018-07-13 14:20:41] jerry at jmweb dot net Description: ------------ When DatePeriod is instantiated with DateTime objects (as opposed to DateTimeImmutable objects), the getEndDate() instance method does not return a reference to the object's internal end date DateTime object. Test script: --------------- $period = new DatePeriod( new DateTime( '2018-01-01' ), new DateInterval( 'P1D' ), new DateTime( '2018-01-02' ) ); var_dump( $period->getEndDate()->add( new DateInterval( 'P1D' ) ) === $period->getEndDate() ); Expected result: ---------------- bool(true) Actual result: -------------- bool(false) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=76620&edit=1