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<?php $nu_array = null; $callback = function ( $item ) use(&$nu_array) { $nu_array[] = $item; }; $array = array('apple', array(1,2), 'butter',array(3,4,array(5,array(6,7)))); array_walk_recursive($array, $callback); print_r($nu_array); /** Array ( ) **/
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => apple [1] => 1 [2] => 2 [3] => butter [4] => 3 [5] => 4 [6] => 5 [7] => 6 [8] => 7 )

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