Req #70381 [Com]: Support comparing DateInterval objects

Edit report at https://bugs.php.net/bug.php?id=70381&edit=1 ID: 70381 Comment by: php dot net at anthonychambers dot co dot uk Reported by: accido at ukr dot net Summary: Support comparing DateInterval objects Status: Open Type: Feature/Change Request Package: Date/time related Operating System: Xubuntu 14 PHP Version: 5.6.13RC1 Block user comment: N Private report: N New Comment: I actually see this working back to 5.5.8 and up to 7.0.6 according to https://3v4l.org/TrPvp The trick is that you have to inspect both intervals first. I just essentially did this: var_export($interval1, true); var_export($interval2, true); var_export($interval1 < $interval2); And that should work. If you don't check either of the intervals then you get different results: * Check 0 = Always returns false * Check 1 = Always returns true * Check 2 = Returns correct values Previous Comments: ------------------------------------------------------------------------ [2015-09-10 19:52:40] requinix@php.net Ha, that's true. And it makes sense since it's not always possible to determine the number of days in an arbitrary interval. That could be a problem when trying to compare two DateIntervals in a general sense, though: what is P30D <=> P1M? A better approach here would be to compare the start date + interval <=> end date. ------------------------------------------------------------------------ [2015-09-10 13:54:16] john_zuk at wp dot pl You can't use ->days as a workaround, because of: http://php.net/manual/en/class.dateinterval.php#dateinterval.props.days See: https://3v4l.org/nlH2v ------------------------------------------------------------------------ [2015-08-28 11:45:43] requinix@php.net DateIntervals are not comparable. You can use ->days as a workaround. https://3v4l.org/H7JsN ------------------------------------------------------------------------ [2015-08-28 10:48:17] accido at ukr dot net Description: ------------ Wrong DateInterval comparsion result Test script: --------------- $a = new DateTime('1981-10-10'); $b = new DateTime('1980-10-01'); $m = new DateInterval('P1M'); var_dump($a->diff($b) > $m); //bool(false) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=70381&edit=1