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fix CallbackIterator to return mixed, as it can be overwritten with a callback
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@ -134,9 +134,9 @@ class CallbackIterator implements \Iterator
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/**
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* Return the key of the current element
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*
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* @return int
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* @return mixed
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*/
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public function key(): int
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public function key(): mixed
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{
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if (is_a($this->rs,'iterator'))
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{
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@ -31,7 +31,7 @@ $interfaces = [
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'valid' => 'bool',
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],
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'IteratorAggregate' => [
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'getIterator' => 'Traversable',
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'getIterator' => '\Traversable',
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],
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'ArrayAccess' => [
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'offsetExists' => 'bool',
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