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<?php $ar = Array ( 0 => Array ( 0 => 'Red', 1 => 'Blue', 2 => 'Black', 3 => 'White', 4 => 'Silver'), 1 => Array ( 0 => 'Yellow' ,1 => 'Green', 2 => 'Pink', 3 => 'Purple'), 2 => Array ( 0 => 'Orange', 1 => 'Olive', 2 => 'Lime') ); array_walk_recursive($ar, function($v, $k) use (&$list) {return $list[] = $v;}); print_r($list);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => Red [1] => Blue [2] => Black [3] => White [4] => Silver [5] => Yellow [6] => Green [7] => Pink [8] => Purple [9] => Orange [10] => Olive [11] => Lime )

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