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<?php /** @implements IteratorAggregate<DateTimeInterface> */ class MyDatePeriod extends DatePeriod implements IteratorAggregate { public function getIterator(): self { return $this; } } function getDatePeriod(string $period): DatePeriod { return new MyDatePeriod($period); } $datePeriod = getDatePeriod("R4/2012-07-01T00:00:00Z/P7D"); if ($datePeriod instanceof IteratorAggregate) { $datePeriod->getIterator(); }
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Declaration of MyDatePeriod::getIterator(): MyDatePeriod must be compatible with DatePeriod::getIterator(): Iterator in /in/Pf4Nb on line 6
Process exited with code 255.

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