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<?php $a = array(1,2,array(3,4, array(5,6,7), 8), 9); array_walk_recursive($a, function($v) use (&$r){$r[]=$v;}); print_r($r);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 [5] => 6 [6] => 7 [7] => 8 [8] => 9 )

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