<?php $array = array( 'one' => range(1,3), range('a', 'c'), 'moo' => array( 'baa' => array('A', 'C'), ), ); function transform(array $array) { foreach ($array as $key => $value) { if (is_array($value)) { yield from transform($value); } else { yield 'JAM_' . $key => $value; } } } $a = iterator_to_array(transform($array)); var_dump($a);
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