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--TEST--
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SPL: DoublyLinkedList: Iterator
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--FILE--
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<?php
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$a = new SplDoublyLinkedList();
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$a->push(1);
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$a->push(2);
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$a->push(3);
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$a->rewind();
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while ($a->valid()) {
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var_dump($a->current(), $a->next());
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}
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?>
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--EXPECT--
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int(1)
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NULL
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int(2)
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NULL
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int(3)
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NULL
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