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<?php $data = ['a' => ['b' => ['c' => 1]]]; $it = new RecursiveIteratorIterator(new RecursiveArrayIterator($data)); $flat = $keys = []; foreach ($it as $node) { foreach (range(0, $it->getDepth()) as $depth) { $keys[] = $it->getSubIterator($depth)->key(); } $flat[ join('.', $keys) ] = $node; $keys = []; } var_dump($flat);
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { ["a.b.c"]=> int(1) }

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