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
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