Bug #68187 [Opn->Dup]: Strange behavior DateInterval in PHP

Edit report at https://bugs.php.net/bug.php?id=68187&edit=1 ID: 68187 Updated by: cmb@php.net Reported by: e45456 at yandex dot ru Summary: Strange behavior DateInterval in PHP -Status: Open +Status: Duplicate Type: Bug Package: Date/time related Operating System: Ubuntu 14 PHP Version: Irrelevant -Assigned To: +Assigned To: cmb Block user comment: N Private report: N New Comment: As it is now, the comparison of DateInterval objects is meaningless anyway. Even if the properties were initialized immediately after creation, and if their order was guaranteed, the standard comparison would not necessarily yield the expected result, see <http://3v4l.org/KFqf5>. The issue that properties of DateInterval objects are not immediately available after construction is already reported as bug #69587. There is also a feature request for meaningful DateInterval comparison (bug #49914). Therefore I'm marking this report as duplicate. Previous Comments: ------------------------------------------------------------------------ [2014-10-13 05:11:35] camporter1 at gmail dot com I spent a bit of time trying to debug this, and noticed that the properties hashtable for the DateInterval object that is being dumped ends up getting elements added when using the get properties handler, whereas the other DateInterval's properties hashtable remains empty, since it isn't dumped. The first comparison notices that both have the same element count, which causes the first result to be false. The second comparison sees that one properties hashtable has 15 elements vs 0 elements, due to having been dumped. ------------------------------------------------------------------------ [2014-10-08 13:54:39] e45456 at yandex dot ru Description: ------------ Strange behavior DateInterval in PHP. I think it is a php bug. Test script: --------------- $i1 = DateInterval::createFromDateString('10 minutes'); $i2 = DateInterval::createFromDateString('30 minutes'); var_dump($i1 > $i2); var_dump($i1 > $i2); var_dump($i1); var_dump($i1 > $i2); var_dump($i1 > $i2); Expected result: ---------------- bool(false) bool(false) object(DateInterval)#3 (8) { ... } bool(false) bool(false) Actual result: -------------- bool(false) bool(false) object(DateInterval)#3 (8) { ... } bool(true) bool(true) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=68187&edit=1