<?php $array = [['ONE'], ['TWO', 'THREE', 'FOUR'], ['FIVE']]; $iterator = new RecursiveIteratorIterator( new RecursiveArrayIterator( $array, RecursiveArrayIterator::CHILD_ARRAYS_ONLY ) ); $test = (function() { yield 'ONE'; yield from (function() { yield 'TWO'; yield 'THREE'; yield 'FOUR'; })(); yield 'FIVE'; })(); var_dump(iterator_to_array($test)); var_dump(iterator_to_array($iterator));
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