I would assume the moment I call some kind of ISO conversion or serialization method on a dynamic interval, I’d receive output relative to now. `createFromDateString` creates the interval relative to now, so why shouldn’t the reverse hold true?
Regards, Moritz > Am 15.03.2021 um 10:18 schrieb Derick Rethans <der...@php.net>: > > On Wed, 3 Mar 2021, Moritz Friedrich wrote: > >> I would like to propose adding a `__toString()` method to the >> `DateInterval` class that should return a valid ISO8601 interval >> (https://en.wikipedia.org/wiki/ISO_8601#Time_intervals). As it stands, >> the class supports creating instances from such interval strings >> passed to its constructor, but the reverse isn’t true: The only way to >> build a string representation of the interval is by querying the >> `DateInterval::format` method for the individual durations multiple >> times (see >> https://stackoverflow.com/questions/33787039/format-dateinterval-as-iso8601#answers >> >> for examples). > > The DateInterval class can also contain intervals that can't be > represented with such an ISO string. For example, how are you going to > do: > > $dt = DateInterval::createFromDateString( "next weekday" ); > > or > > $dt = DateInterval::createFromDateString( 'next Monday 02:00' ); > > __toString needs to work in every case, and I don't think you can do > that with ISO 8601 interval strings. > > cheers, > Derick > > -- > PHP 7.4 Release Manager > Host of PHP Internals News: https://phpinternals.news > Like Xdebug? Consider supporting me: https://xdebug.org/support > https://derickrethans.nl | https://xdebug.org | https://dram.io > twitter: @derickr and @xdebug -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: https://www.php.net/unsub.php
