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<?php $a = [ 'a' => [ 'a1' => 'a1', 'a2' => 'a2', 'a3' => 'a3', ], 'b' => [ 'b1' => 'b1', 'b2' => 'b2', 'b3' => 'b3', ], ]; $it = new RecursiveArrayIterator($a, RecursiveArrayIterator::CHILD_ARRAYS_ONLY); $b = []; foreach ($it as $key => $value) { $b[$key] = $value; } var_dump($b);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { ["a"]=> array(3) { ["a1"]=> string(2) "a1" ["a2"]=> string(2) "a2" ["a3"]=> string(2) "a3" } ["b"]=> array(3) { ["b1"]=> string(2) "b1" ["b2"]=> string(2) "b2" ["b3"]=> string(2) "b3" } }

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