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<?php class NullKeyIterator extends \ArrayIterator { public function key() { return new stdClass(); } } $iterator = new NullKeyIterator(range(1,10)); foreach($iterator as $key => $value) { var_dump($key, $value); }
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Return type of NullKeyIterator::key() should either be compatible with ArrayIterator::key(): string|int|null, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/FXqdO on line 5 object(stdClass)#3 (0) { } int(1) object(stdClass)#4 (0) { } int(2) object(stdClass)#3 (0) { } int(3) object(stdClass)#4 (0) { } int(4) object(stdClass)#3 (0) { } int(5) object(stdClass)#4 (0) { } int(6) object(stdClass)#3 (0) { } int(7) object(stdClass)#4 (0) { } int(8) object(stdClass)#3 (0) { } int(9) object(stdClass)#4 (0) { } int(10)

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